Better leader, Zeke
Better true point guard, Zeke
Better shooter, Steph
Better scorer, Steph
Better passer/creator, Zeke
Tougher player, Zeke
Better career thus far, sort of irrelevant, it will be Steph in the end if it isn't already.
Better talent, hmmmm, tough one, they are contrasting styles of player. I'll go Zeke because of his all-around game but Curry's shooting ability (and his handle is nice, too) is almost enough of a weapon to swing it in his favor.