In what way is he superhuman, and to what degree?
I mean, technically speaking, Captain America has superhuman stamina due to the Super Soldier Serum, and Wolverine has actual mutant powers that makes him superhuman in numerous ways. It doesn't really give them superhuman stats, except when compared to real life humans (or arguably comic book humans of his size and training level in Logan's case, due to being able to exert more force without damaging himself enough to take himself out of the fight due to healing factor and adamantium bones).