frost: u cast more spells which each hit less hard
the mastery/haste builds are very close, while also considering mastery and haste benefit from each other. with ur itemlevel going haste could probably be a dps increase, with end gear mastery is slightly ahead.
ok mate i got it , but since i am losing like alot of mastrey i feel like my spells wont hit that hard. So is it really the same dps ??
Like the others said :
Haste = more spells but hit less hard
Mastery = less spells but hit hard
I enjoy haste a lot more, I find more dynamic, i don't like having slow casting spells, and if you mess up you get to max stacks faster so thats a bonus. In the end its slighty the same dps, so you should just play the one that suits you best.
If some mage have the same gear has you but do a lot more dps, thats means there a problem in your rotation or maybe they're just better then you, it happens ^^