Deadpool(DP) vs Deathstroke(Arrow)

-Slade is full armored and has mirakuru
-Deadpool without guns only swords

Probably Slade, considering it's questionable whether Wade's swords could even do any serious harm to him. Oliver tried to stick an arrow into a lesser Mirakuru soldier once, and all he did was bend the tip.

stalemate, IMO, neither can hurt each other to put down for the count