Superman vs The Wolverine
OK, so let me be real with you for a second:
Superman gets adamantium claws, a healing factor, bloodhound nose, and hair on his ballsack
The Wolverogan gets Kryptonian powers. The whole shebang, reactions, flight, HV, Listerine breath, and an almost extinct race
Now, the problem here is that the characters have no practice with these powers. They know how to activate them, but they have no experience using them. So Wolverine won't be a Superman to start the thread off, and Superman won't be a The Wolverine who is well equipped to be the best at whatever he's doing at the time. They just get powers, not experience, so Clark will still be Clark, and The Wolverine will still be The Wolverine
They still have their normal powers though in addition to these new powers
They start the fight in the generic location of Uzbekistan.
They are confined to Earth, but they can travel anywhere in the world. No BFR.
Last but no least, WHO WINS!?