Sorry, late to reply to this, but no, his play on the field isn't perfect. Has any prospect ever (Luck excluded) ever been perfect? I mean, come on; that's silly.
You know who had major fumble issues early? Adrian Peterson. Who's the best running back of our generation outside of LT? Peterson.
I don't know if he's exactly what the Ravens need because he's not the best back between the tackles, but he's got exciting ability on the perimeter and with the ball in his hands. He's a play waiting to happen every time he touches it.