in SF4, characters like zangief have slower dashes than say grundy. and in that game ALL projectiles push you backward on block, not just specific ones like in injustice. and even using focus through fireballs is often unsafe when the dashes are that slow
and yet, gief still manages to do OK for himself...
back more on topic, something friends of mine have brought up is how much easier it is to have an extended fullscreen projectile fight in this game, compared to SF. the way projectiles cancel each other out in other fighting games means that the player(s) must eventually move forward to some degree in order to accomplish anything - having projectiles just pass through each other and still hit the opponent removes that check, and results in what i and some others consider to be a less strategically deep form of zoning.
aside from that and some of the things commonly mentioned like interactables needing tweaking, i am very happy with this game!