Is that they dont flip backwards like they do in SF(most)and MK.

But hey it could be worse in SC you can't jump backwards at all.

Flips generally only happen in 2D fighting games. 3D fighting games give you the alternative of side stepping. Each technique works for each game. So if you really want flipping, wait for Super Street Fighter IV to come out.

Got to understand that each fighting game is going to be different in speeds and mechanics.

Its not a big deal I just think its a nice little touch, and I like the puff of smoke that appears in SF and MKDC when they jump