That's a pretty good comparison.
I suppose his downfall is that he has no discernible strength. He runs a lot but never really finds himself in dangerous positions. Neither his passing nor shooting is particularly good. He doesn't drive the play forward in a meaningful way. He's just sort of ... there. Plus he looks kinda goofy and went from Fiorentina to Juve, which is generally frowned upon.
He'd likely do a job in MLS given the drop in quality, but he certainly hasn't shown himself to be a difference-maker aside from one decent year that got him his big move.