the hitbox on chun's lightning legs is just fine, it just looks rediculous b/c you recover slower from hitstun in mvc3 so the legs continued to combo easily in the corner. as for storms super it's just fine as is in terms of damage and chip. the reason it was doing so much chip is because P2 failed to advance guard it. just like in TvC, if you don't advance guard you will take a crazy amount of chip dmg. on that note i wish more people would at least wait until the game drops and we have sufficient time to actually learn the characters and game mechanics before they start screaming for nerfs left and right.