There already is a SubPuncher set in the first post with Sub/Focus Punch/Crunch/Dragon Dance, but if you have Shed Skin it's usually a good idea to have Rest. Use Ice Punch with Moxie.
I've used the Bulk Up sat, and I must say, I am freakin' amazed. Not only does it look badass, it is badass.
I'd hate to rain on people parade but IMO Scarfty should be BL or UU at this point. Whenever I used Scarfty, it wasn't that it was bad, but there was always something better. IMO the only thing that Scrafty is decently good at is his Bulk Up set with Rest. But even then, Drain Punch is so weak is that it is phazed out or even forced out easily (especially by CB Scizor) :\ STAB Crunch isn't really that helpful, since we only have two ghosts in OU and then all the psychics carry Focus Blast anyway.
Meanwhile, you could use a fighting type with priority with huge attack (lucario), speed (terra), or better bulk with power (conkledurr) than Scrafty to much greater effect.
I don't know how the BU set fares right now because i haven't used it in the last time, but the big problem about DD Scrafty is that he lacks any offensive presence until he gets his first boost he has a bad 58 base speed and a mediocre 90 base attack, so its really hard to force someting out thats not choice locked into a Hidden power/nve attack or blissey. So he has to take an attack to be able to boost up, wich is possible thanks to his good defenses, but after he took an attack and boosted up he still is easy to revenge with scarfers or priority.
He is one of the Pokemon that can work in OU if given the proper support, but most of the time your better of using another late game sweeper like lucario, reuniclus, CS terrakion etc. because they are a lot easier to play with and require much less support while they are also able to support the team on their own with Priority/TR or just being a good revenge killer in terrakions case.
Alright, you have a lot of common misconceptions. While Scrafty isn't a powerhouse like a Terrakion or a Conkeldurr, it is by no means outclassed by any of them.
First and foremost, Scrafty has access to Shed Skin, a privelege other Fighting-types can only dream of. Not only does this give the Bulk Up rest set an edge over any other Bulk Up user, it also gives the DD set a perk too. Will-O-Wisp or Thunder Wave is absolutely devastating to something like Terrakion, but Scrafty can potentially lose that status immediately. Speaking of the DD set, you've neglected to mention it in your argument entirely. There is not another Pokemon in the metagame who can accomplish the same role as Dragon Dance Scrafty, because, well, no other Fighting types have access to it. While Terrakion's Double Booster set can be considered "better" Terrakion can usually only grab one of the two boosts, not both. Furthermore, Scrafty does not have the issue of being weak to 3 priority moves, and has superior bulk. With Moxie, Scrafty actually becomes more powerful than Terrakion after a couple KOs.
Drain Punch is not "so weak is that it is phazed out or even forced out easily". While Conkeldurr's Drain Punch is undoubtedly more powerful, Scrafty isn't exactly a weakling at +1. A lot of common phazers, such as Heatran, would never dare switch into Scrafty. Those that do, such as Dragonite, Gyarados, and Skarmory can just as easily force out Conkeldurr. Is Conkeldurr's Drain Punch pathetic because it can be forced out by these Pokemon? I don't think anyone can say yes to that, its the fact that these phazers hace such a distinct advantage over Fighting-types that makes this happen. Conkeldurr's Attacks are more difficult to take, sure, but Scrafty's power is not as meager as you make it out to be. Not to mention Scrafty has its own phazing move in Dragon Tail, which by the way, is another niche Scrafty has over other Fighting-types. As a last man standing Pokemon, I would much rather have Scrafty than Conkeldurr because Scrafty won't eventually succumb to status.
Finally, Crunch is without a doubt a helpful move. There are indeed only 2 ghosts in OU, but the statement "all the Psychics carry Focus Blast anyway" is completely false. Lets name "all the Psychics" in OU shall we? Alakazam, Celebi, Espeon, Jirachi, Latias, Latios, Metagross, Reuniclus, Starmie. Of which, only 2 Pokemon commonly carry Focus Blast (Alakazam, Reuniclus) and only 4 (Alakazam, Espeon, Metagross, Reuniclus) commonly carry Fighting moves. This is ignoring other commonly used Psychic types, such as Azelf, Mew, and Slowbro, who don't use Fighting-type moves either. Now, the Dark STAB isn't even the most important advantage Scrafty has over other Fighting types, its that Dark defensive typing too! Pokemon such as Celebi and Slowbro can no longer touch it, while Scrafty can retaliate with a big fat Crunch to the face.
So we have Shed Skin, Moxie, Dragon Dance, Dragon Tail, Dark STAB, and Dark defensive typing. All of which no other viable OU fighting types have access to. How exactly is there "always something better"?
EDIT: Oh yeah, I forgot to mention something. Life Orb Timid 252 SpA Alakazam's Focus Blast deals 68.9% - 81.4% to 252 HP / 252 SpD Careful Scrafty, which is a failure to OHKO, while Scrafty can return fire with Crunch. Add in Focus Blast's infamous terrible accuracy, and your "all the psychics carry Focus Blast anyway" argument has even less grounding.
While each of these Pokemon can hurt Scrafty pretty badly with the appropriate move, how well can they take a +1 Crunch? Assuming no investment from Scrafty, it deals 69.7% - 82.8% to Life Orb Starmie, 117.5% - 138.9% to Alakazam, and 63.6% - 75.5% to Latios. While Scrafty has no business switching in against these Pokemon, they shouldn't try their luck switching into Scrafty either. Metagross can defeat Scrafty, if played correctly, I will give you that.Alright it was ignorant for me to say "with Focus Blast" on Psychics, but I think the distribution of Focus Blast is a moot point because some of those Psychics without Focus Blast actually have attacks that could hit Scrafty just with a different move. Specs Latios' 1st Draco Meteor does similar damage to Alakazahm's first Focus Blast 67%-79% (he could potentially trick you as well). Starmie's Hydro Pump does 42%-49%, however if we take into account that Starmie is in the rain Hydro Pump (which it very commonly is) then it does 63%-74%. Metagross does 46%-55% damage before a Bulk Up (Choice Band does the same after one Bulk Up on Scarfty). While that's not impressive, Metagross still has the very real possibility to trick you. Scrafty still can deal with Celebi, Latias, Jirachi, and Espeon well, but I don't think anyone would keep them in a Scrafty. The point I'm trying to make that a lot of the Psychic types Scrafty should be able deal well with by having Crunch can ultimately maim him with the correct move, then follow up for a revenge kill. I find BU Scrafty as the better of the two Scrafty's, but let's move onto the DD set.
While it is true that Scrafty is outsped by just about every Scarfer in the tier, how many of them can actually take out Scrafty? 65/115/115 Defenses are nothing to scoff at. Scrafty should also have no difficulty forcing switches. Tyranitar, Ferrothorn, and Celebi are all Pokemon that Scrafty can force out (I'm obviously not listing all of them, just giving a few examples off the top of my head). If all else fails, it can take advantage of its bulk and "brute force" itself a boost. It is very difficult to bring down a Scrafty without a STAB, super effective move.Alright, Scrafty does contain the niche of being the a DD'ing Fighting type, but it is quite underwhemling. First off, we have to note that we are working with a poke that is slower than DD Ttar, but with 90 base Atk :o. This mean that with Scrafty you start out very weak, making it very hard to set up since you can't really force a switch or risk taking a hit. Now if you do get the oppurtunity to set your DD up, now you have to face the fact you will be outsped by every Scarfer in the tier, which is much more common that Excadrill is gone. The next thing you have to note is that priority in the form of Scizor's CB Bullet Punch and Conkledurr's Mach Punch will put quite a dent in you (53%-62% and 51%-60%) and at what time they will put that dent into you depends on your moves. If you have Hi Jump Kick they will try to make you miss or stall out of Life Orb, putting you into range of death, or if you have Drain Punch they can tank the hit and retaliate with a powerful move themself (Drain Punch and U-Turn). This isn't mentioning that some Pokes, such as the very popular Skarmory, are hard stops to DD Scrafty.
Now you've shown me a case where Conkeldurr is better than Scrafty, but you still haven't shown me why it outclasses it yet. Drain Punch recovery can potentially outpace the status damage, true, but what if the status you get tagged with is Toxic? While Conkeldurr will eventually succumb, Scrafty just Rests it off, or maybe even Shed Skin will take care of the job.Now to answer your question on why Scrafty is outclassed. BU Conkledurr can set up just as easily as Scrafty, but his HP recovery will be better due to his higher attack, guts means DP healing gets a boosts and outpaces the residual damage, and he has priority. Comparing the power of Conk to Scrafty is like comparing no item draco meteor flygon to a no item draco meteor latios, this means that payback can actually be just as powerful as scrafty's crunch. Terrakion outpaces him speed and powerwise, with a STAB Rock that hits more things super effectively with just about the same neutral coverage. Finnaly, Lucario's priority means that he can bypass his speed issue, but also hit harder than Scrafty at the same time, its a much better late game cleaner.
I hope you enjoyed the read and I hope it made everything a bit more clear :p (took so long to type)
Answers in bold.While each of these Pokemon can hurt Scrafty pretty badly with the appropriate move, how well can they take a +1 Crunch? Assuming no investment from Scrafty, it deals 69.7% - 82.8% to Life Orb Starmie, 117.5% - 138.9% to Alakazam, and 63.6% - 75.5% to Latios. While Scrafty has no business switching in against these Pokemon, they shouldn't try their luck switching into Scrafty either. Metagross can defeat Scrafty, if played correctly, I will give you that.
Alakazam and co. aren't switching into Scrafty anyday. It should be the other way around. And the fact is, if you switch into Alakazam, you will be facing a substitute. Which means that Alakazam will get 2 hits before Scrafty can ko it back. Scrafty can win only if fail blast misses. I'm pretty sure that after 1 calm mind + LO boost(should Alakazam be using the other set), Scrafty is ko'ed by focus blast.
While it is true that a couple Psychic types have a way to get through the gila monster, most Fighting-types would lose outright. You certainly wont be keeping Conkeldurr in against Alakazam or Celebi ever, would you?
If conky uses Payback on the obvious switch, Alakazam will be dead. Though its true that bulky psychic types force Conkeldurr out. That is one advantage scrafty has over conkeldurr.
While it is true that Scrafty is outsped by just about every Scarfer in the tier, how many of them can actually take out Scrafty? 65/115/115 Defenses are nothing to scoff at. Scrafty should also have no difficulty forcing switches. Tyranitar, Ferrothorn, and Celebi are all Pokemon that Scrafty can force out (I'm obviously not listing all of them, just giving a few examples off the top of my head). If all else fails, it can take advantage of its bulk and "brute force" itself a boost. It is very difficult to bring down a Scrafty without a STAB, super effective move.
Sadly Fighting type pokemon/moves are all too common.
Some of the other most prominent sweepers in the metagame, such as Dragonite, Terrakion, and Haxorus, are also weak to priority. While I will concede that Skarmory puts a full stop to Scrafty, this is a Pokemon that also puts a stop to Landorus and Haxorus. Are those two Pokemon weak? While I'm not saying Scrafty is as good as these Pokemon, you can't really hold these weaknesses against it, as other prominent sweepers are guilty as well.
Dragonite has multiscale to shrug of almost any hit. It has a higher attack stat, a usable special attack, higher speed than scrafty and a better STAB overall. It also has roost for instant recovery and its own priority E-speed. There is wide gulf between them. And infact D-nite(with Multi-scale intact) can shrug of quite a few priority users itself and easily defeat them.
The most common set for Haxorus is the CB set. Try finding a safe switch in to cb Haxorus other than Skarmory.
Terrakion is weak to priority, I concede. However, it has a much higher attack, can afford to use more powerful moves(close combat) and has swords dance. Infact Terrakion is impossible to handle without priority or scarfed mons.
The only real issue with Scrafty is power, this is why it is not used as much as something like a Dragonite or a Haxorus. However, it does have access to STAB Hi Jump Kick, which is certainly not easy to take. There are obvious risks to HJK, but it somewhat mitigates the power issue. As for Speed, Scrafty can very often get in 2 DDs by virtue of its bulk. With Moxie in hand, Scrafty could easily go on a snowball sweep. I can't tell you how many times I've DDed once, then tanked a hit to get in a second DD and 6-0ed a team. Finally, Scrafty has Shed Skin, which its fellow physical sweepers can only dream of.
You can't have both shed skin and moxie at the same time.
Now you've shown me a case where Conkeldurr is better than Scrafty, but you still haven't shown me why it outclasses it yet. Drain Punch recovery can potentially outpace the status damage, true, but what if the status you get tagged with is Toxic? While Conkeldurr will eventually succumb, Scrafty just Rests it off, or maybe even Shed Skin will take care of the job.
A guts'ed Conkeldurr at +1 has more than 900(!) attack. Yes, it will succumb soon but not before taking down half of your team unless you keep switching and using protect. A scrafty at +1 has something around 420~ attack. Its not even half to what Conkeldurr has +1 with guts. Again Shed Skin doesn't always strike in every time you need it.
Comparing Conkeldurr vs Scrafty to Latios vs Flygon is most definitely a false analogy. Not only do they have absolutely nothing to do with each other, you're ignoring the fact that Conkeldurr and Scrafty don't even fulfill the same niche. Conkeldurr has priority, Scrafty has Shed Skin Rest. I also don't know why you're bringing up Terrakion and Lucario in a Bulk Up Fighting type argument, since, you know, they don't use Bulk Up? Bulk Up Scrafty is not meant to be a late game sweeper, it's meant to be a stallbreaker/ last man standing booster.
Conkeldurr's "HP recovery will be better" is outright wrong, as Scrafty has access to Shed Skin Rest. That'd be full status and HP recovery. I don't think there's much that can top that.
Scrafty is certainly not perfect, and it certainly has its flaws. Hence, it is low end OU. However, I have to disagree with your opinion that Scrafty is a horrible Pokemon who deserves to be in UU or whatever.
Infact Terrakion is impossible to handle without priority or scarfed mons
A guts'ed Conkeldurr at +1 has more than 900(!) attack. Yes, it will succumb soon but not before taking down half of your team unless you keep switching and using protect. A scrafty at +1 has something around 420~ attack. Its not even half to what Conkeldurr has +1 with guts. Again Shed Skin doesn't always strike in every time you need it.
its much easier to activate than Guts (since you need to predict the status move for Conk to activate Guts since no idiot is going to status Conkeldurr unless they have something like Sub Protect Gliscor which walls it.
There already is a SubPuncher set in the first post with Sub/Focus Punch/Crunch/Dragon Dance, but if you have Shed Skin it's usually a good idea to have Rest. Use Ice Punch with Moxie.
To be honest, I'm really not understanding the Scrafty nor why it's on the low end of the OU tier. I use the standard DD Scrafty and honestly, it's pretty common for me to sweep an entire team with Scrafty alone.
You have to know how to use Scrafty. You can't just throw him out there willy nilly and expect him to succeed. Like any Pokemon, he needs proper team and hazard support. Scrafty's bulk allows him to come in on a resisted move and set up as necessary. He can easily shrug off any damage thanks to Drain Punch. If a Pokemon, like Gyarados, that resists Scrafty's Drain Punch or Ice Punch comes in you can still use Crunch to take them out. Scrafty's Attack and Speed should NOT be a problem thanks to the combined efforts of Moxie and Dragon Dance. Scrafty is even more successful if he's holding a Lum Berry. Leftovers and Life Orb are redundant for obvious reasons.
Also, while High Jump Kick's 130 base power is high attractive it is simply too risky to use. What's the point of a sweeper if there's a high probability that he will wind up killing himself?