When you put it that way, he starts to sound like Melee Sheik.It's not even the fireballs even if they're nutty as fuck. It's the combination of giving him stupidly high attack power (who's brilliant idea was it to make his fair vary between being a spike or Dr. Mario's dunk; let's not even get into fsmash or dsmash), making everything recover a billion times faster than you are ever truly prepared for, giving him huge priority on down B, a slide that stays active as long as Zero's buttons in Marvel vs. Capcom 3 that can combo into itself up to 3 times, DI taken into account, and of course a faster cape that can launch you if sweet spotted.
This character is amazing and stupid at the same time. :lol
It seems like the Project M team was trying to make him the ideal beginner character and went a bit over the top with it.