I don't think (maybe some MINOR bugs), the thing is they are complicated and most ppl just cannot use their max potential.
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I am taking the average between icecrown and warmane... if all you do is random bgs, yes all you see is plate. But as far as raids and arenas go i feel like this is a good average. Yeah in arena every game is ele sham it seems thats why i kept it that high, plus resto sham is very strong 10/25 pve
for anyone else I have discovered this data https://i.imgur.com/LFKmr89.jpg
paladin is 13% and warlock 6%
druid 11% and the rest between 10 ( warrior dk) and 8 ( priest)
Warlock legendary pokemon confirmed.
It's impossible to use census because Warmane has put a 50 sec CD on /who.