Capable during youth, yes. But do you expect him to be at the peak of his ability when he has had to refrain from bloodbending to a noticable degree for a considerable length of time? On top of that, he was bloodbending wolves with his mind. They are nowhere near as biologically complex as humans are.

tl;dr, in more demanding situations, Noahtok is going to be EXTREMELY rusty. I'd like to see him attempting to concentrate on bloodbending when he's flying half-way towards the ceiling when the floor catapults him, too.