I'm not sure I'd take Ezria as more powerful then Kylo Ren. the power of the force users in general in the animated shows has always been a little more... exaggerated vs the movies (consider Kanan cutting as walker's leg in half, if a lightsaber could do that why would Luke have bothered with doing what he did in Empire?)
that said, I've got a third and better issue with that. Del Toro's proably too young to be Ezra.
unknowingly or not we've got an age for Ezra, he's, quite literally, the exact same age as Luke and Leia, give or take a day. but Del Toro's a good 15 years younger,