I always thought his powers did augment his natural agility and speed and also somehow give him the sense of when things are incoming. I mean he did have a bullet catch moment in x-men #1, and in marvel that may classified 'peak' human it's pretty close, but add that in to the upside bball shot that couldn't be blocked by wolverine plus holding his own in a hand to handish fight with skrull Gladiator in Uncanny #277 and also Fabian's Gambit #1 where he counts the bullets and understands they all missed makes me pretty feel safe in saying his powers do give him a definitive edge when added to his Guild Training. Of course this was all in his heyday, most recently he was killed by some ordinary gangster so..........
On a side note not that surprised to hear Tatum is on board with this though the 150 million budget does make me a little nervous since I don't want to rely on CGI for this movie, I woulda thought they could make it for half and given Fox's meh track record it does make me somewhat trepidatious but hopefully all the extra money will be put to good use.