Everyone really needs to read this post. This is the best argument for unbanning double team I have ever seen. Props to you darknessmalice for providing that information.I have decided to change my view from supporting Evasion Clause to opposing it and supporting the inclusion of Double Team in our current OU metagame.
Here's the Evasion modifiers:
-6: 300% (9/3) chance of a 100% base accuracy move hitting
-5: 266.7% (8/3)
-4: 233.3% (7/3)
-3: 200% (6/3)
-2: 166.7% (5/3)
-1: 133.3% (4/3)
0: 100% (3/3)
+1: 75% (3/4) (3/(3+1))
+2: 60% (3/5) (3/(3+2))
+3: 50% (3/6)
+4: 42.9% (3/7)
+5: 37.5% (3/8)
+6: 33.3% (3/9)
If +9 was obtainable, the chance would be 25% (3/(3+9)) = (3/12).
Here's the defence modifiers:
-6: * 400% damage dealt
-5: * 350% damage dealt
-4: * 300% damage dealt
-3: * 250% damage dealt
-2: * 200% damage dealt
-1: * 150% damage dealt
0: * 100% damage dealt
+1: * 67% damage dealt
+2: * 50% damage
+3: * 40% damage
+4: * 33% damage
+5: * 28% damage
+6: * 25% damage
So let's say there's two pokemon with the same stats. One has +6 Evasion, and one has +6 Defense. Now let's say there is a Rattata that only knows Quick Attack and every time it hits, it does exactly 100 damage to both of these pokemon excluding the effect of damage modifiers.
The pokemon with +6 Evasion has a 33.3% chance of being hit by a 100 base accuracy power move. Chances are that if a Rattata used Quick Attack on this pokemon 3 times, it would hit once, and that pokemon would take 100 damage. If that Rattata used Quick Attack on the +6 Defense pokemon, each of the Quick Attacks would hit, but they would only deal 25% of the damage they are meant to do. Each Quick Attack would deal 25 damage, and the pokemon takes 75 Damage.
This is an example backed up by the data. Statistically, Defence boosts are better than Evasion boosts. If +9 modifiers were possible, statistically, +9 Evasion is equal to +6 Defense, for that is when the accuracy of moves on a pokemon would decrease to 25% (3/12). This would imply that Cosmic Power/Stockpile is more broken than Double Team, for it is more likely to reduce the overall damage that a pokemon will take.
Of course, such a claim would be taken as outrageous. There are three reasons why:
First off, Roar/Whirlwind has a much easier time at removing Defense boosts than Evasion boosts. However, the chance of Roar hitting a pokemon as it DTs before it reachs +6 is very high.
Secondly, Defense boosts do not protect the user from critical hits - that is the 6.25% chance of a crit actually occurring.
Finally, and perhaps most importantly, Double Team is available to almost every pokemon whilst Double Team isn't, despite there being some decent users of Cosmic Power like Jirachi, Starmie and Clefable. However, such sets are never seen due to their lack of power. But would they be better with Double Team in place of Cosmic Power? Probably not.
Probably the bigget debate about Double Team is when used in Baton Passing teams.
Every pokemon that cant know Baton Pass can know Double Team. The only three pokemon that can know Baton Pass and Cosmic Power are Lunatone, Solrock and Smeargle, and the only three that can know Baton Pass and Stockpile are Driflbim, Mawile and Smeargle. Obviously, it is far easier to Baton Pass Double Team than Cosmic Power/Stockpile, especially considering that Smeargle would much rather be used to Baton Pass Ingrain, Mean Look or Belly Drum.
But what about +2 Defense Stat modifiers - Iron Defense, Amnesia, Acid Armor and Barrier?
Well, using Iron Defense halves the damage taken from physical attacks (50%) whilst the damage taken from special attacks is the same (100%). For the sake of my argument, let's average the two percentages and say that Iron Defense has improved the user's "overall defense" and it will take 75% "overall damage." This is exactly the same percentage as the chance of a 100 base accuracy move hitting a pokemon after 1 DT. So in the long run, chances are that a pokemon that uses Iron Defence once will be benefited the same if he had used Double Team in place of Iron Defence.
But what if two Iron Defenses were used. The physical damage taken is now 33%, so the pokemon will take 66.7% "overall damage". What is the chance of the pokemon that, instead, uses two Double Teams, is hit by an attack? 60%. In the long run, that's less damage taken.
Does this mean that Double Team is better than +2 Defense modifiers... what if I used one Iron Defense and one Amnesia? What's the overall damage I would take? Well, that's the average of 50% and 50%, which is 50%. A pokemon that has used Double Team twice has a 60% chance of being hit - in the long run, the pokemon that used one Iron Defense and Amnesia is better.
Now which pokemon can know Amnesia and Iron Defence/Acid Armor/Barrier (excluding Ubers)? Corsola, Cradily, Gorebyss, Marcargo, Swalot, Torkoal, Registeel and Smeargle. Out of these, Gorebyss and Smeargle are the only ones that can also know Baton Pass. But perhaps more importantly, one pokemon would not want to have two of its moveslots taken up by Defence boosting moves.
This then come to my final point that Baton Pass Teams revolve around Passing +6 Def and +6 SDef around the team. After receiving an Agility Boost from Zapdos and an Ingrain boost from Smeargle, the team would, let's say aim to let Vaporeon pass +6 Def to Gorebyss to pass +6 SDef onto the next pokemon. Assuming there is no need for switches to teammates and recovery moves, that's 4 moves used by each pokemon (3 Acid Armors/Amnesias and 1 Baton Pass each, reducing overall damage to 25%. If, instead, Vaporeon used 6 Double Teams and 1 Baton Pass, that's 7 moves used, but it only reduces overall damage to 33.3%. If Vaporeon was able to obtain +9 with Double Team, to reduce overall damage to 25%, it would require 10 turns, two turns too many - the process of Baton Passing Evasion Boosts is not as efficient as passing Defense Boosts. And that just cost me 1 extra moveslot out of my 24 moveslots.
If you're going to argue that a crit with Machamp's Close Combat will OHKO my +6 Def Gorebyss, well yes, that's true. But if the Close Combat would hit my +6 Evasion Gorebyss, which is more probable of occuring, that would OHKO Gorebyss anyways.
So Evasion boosts are very comparable to Defense boosts and may even be inferior to Defense Boosts. But are Defense boosts broken? NO!! We all know that Mewless Baton Pass teams are far from being considered broken teams. Double Team won't change that.
I've skimmed over this thread and I have only seen haze mention a few times. I remember the good old days when hazers we're a staple on every team and I think DT will bring back hazers.
Really does it hurt to test it? I mean if they test it and if they think it is unbroken and unbanned. Then if proves to be broken then they can rebanned it.
Tbh, if there is so many people that thinks it isn't broken, it should deserve a test