Ferals have always done massive amount of burst. generally they do more burst than a Boomkin if they can have enough tot. Boomkins just rein surpreme due to the fact that they are more balanced (no pun intended) they heal well, they have amazing mobility and they do great damage
Both have their advantages. but the Boomkin is better because it allows you to hit from a range, dot multiple people, and keep you from over extending in certain situations.
imo, they seem to be hitting harder than they were before 5.2, yet i see nothing in the notes of feral to explain it. last night in BGs alot of players are noticing and making comments on this, etc