Sorry but your opinions are invalidated by math.
Who exactly can't Tyrantrum OHKO, with or without SR with his offensive moveset? The Strong Jaw Fangs aren't great, but they give valuable OHKOs against things that resist Head Smash, like Forretress & Landorus-T.
If anything, Tyrantrum's biggest flaw is his mediocre defensive typing, which leaves him weak to Bullet & Mach Punch as part of it. His offenses aren't average or underwhelming, they're great in fact.
You didn't read everything I said, and I don't feel like repeating myself for like the fifth time.
I think a lot of people are assuming he will be running Rock Head. I know it isn't released yet but its just a matter of time. If your talking about Strong Jaw Tyrantrum, then I agree that he is underwhelming as a sweeper and should probably run Choiced sets since his sweeps will be cut short either by a check or by his own recoil. But after Rock Head is released, I do think there is sweeping potential in him. Not to mention the possibility of maybe being able to tutor him Outrage in the future. From experience in Showdown, I have had several opportunities to sweep with that have been cut short by recoil, but I can see that in these situations had I had access to Rock Head, he would have definitely finished off the game for me. As for the accuracy of Head Smash, I do agree 80 isn't the best but it isn't terrible either. Dragon Claw makes a nice reliable option when the sheer force isn't needed. However because of this, I do recommend a back up sweeper. But the fact still remains that after Rock Head, there will be potential in him.
Oh, I'm not assuming any Head Smash recoil (with that recoil it's definitely going down in 1-2 hits, lol). I'm just not assuming that you will be able to set up for free. So while you DD you get hit, which won't leave that many HP so Life Orb recoil will kill you in like after 1-3 hits.
Even
if your opponent switches immediately. Most of them have a Scizor who is just waiting for you to do nothing offensive and then OHKO you with a Bullet Punch. And if you already got hit then like many priority moves will end it for Tyrantrum. Not to mention scarfers. You never know if they are or not. Suddenly you die. Welp.
[ What I'm trying to say here is that Life Orb isn't that ideal if you're using a DD set ]
Also just think of this:
A TRex has lower attack than a Crab (albeit with a giant claw), a little Fox thing (Flareon), a fighting guy with 4 arms, a bear, some bugs, a not even fully evolved rhyno, and many other things. If you weren't disappointed with his attack when it was found out then I don't know... as for me I definitely expected 140+ for it. Why? Well, Archeops ist just an ancient bird thing, surely a freaking TRex would be stronger than that, and all the others I listed above?!
And it's not just the "logically stronger" thing, like I said his moves probably won't be that strong (besides Head Smash). You want something fast and strong, immediately, because most of the time you will be forced out from priority since he's a Rock type. He will have a difficult time doing much even if he gets the turn to set up. And mostly he'll be good because of Head Smash (which is like I already said 100s of times, really strong, because it has such high BP, not because of his 121 base attack; although at least it's stronger than Aggron and Relicanth...).
I think the one agreeable statement that can be said for Tyrantrum is it's frustratingly low Special Defense and Speed. One or the other should have been slightly better. I don't think making him a base 80 or even 85 in either of the stats would have been a stretch. Of course this is just to complain for OU viability but it reminds strongly of Luxray, who got base 70 speed... really?
Idea for a mini thread - Stats That Make Your Head Spin or Stats That Make You Wonder What GameFreak Was Thinking...
While I did hope for ~base 80 speed, 71 is still decent enough.
I'm happy that he actually does just have enough speed. I train many things up to 264 speed, because you need to outspeed Breloom (or else you'll lose like 2 Pokemon because one gets put to sleep and the other gets a really really strong hit or has to deal with the 2nd most annoying thing after sleep: a substitute; though thankfully sleep did get nerfed...). And after a +1 speed you'll outspeed base 130s, which is pretty good.
Definitely agree that his low SpD is disappointing, which will likely hold him down quite a bit... :/