Wolverine is actually well equipped to deal with Slade due to his skill set and claws that could knock off the mask to not have to deal with the nth metal.
Deathstroke consistently has been shrugging off punishment from spider-man strength+ types...and logan is not really physically stronger either. However, Slade canèt hurt wolverine with the physical strength he has so far.
TRUE DEATH=Logan is faster. Slade has enhanced speed and is damn fast, but he has not bullet-timed yet. Hell, I doubt he will get there and hover just under it.
Logan is also a much better fighter. Slade got crazy gun skills already, but his cqc is all implied with the stuff shown not up to snuff yet.
Slade would need to get Logan to stab himself in the face or something to take this. Not possible given he is slower.