I have been looking at the changes, and there are some funny ones:
Akuma SA2 full bars is roughly 0 frame startup, and totally invincible for all active frames. The only travel time part is coming down from the top of the screen, if the opponent is jumping it is true instant
Akuma sa3 is roughly 2 frame startup, and invincible for 18 frames. He is only hittable after he lands, even if active frames are over. The 2 bar version is roughly1f startup as well.
Alex: Ex powerbomb has 5 frame startup, and invincible for those frames. SA3 is invincible for all active frames, and is something like 5 f startup, 5 active frames
Chun: Crouching mk has roughly 20 frames of recovery now, instead of 14
Elena: her blockable command grab range is about to the end of her foot during her throw attempt animation, it is pretty far.
That is all I felt like looking at for now. The akuma and alex changes to the supers I think are pretty funny