Sure Deadpool was a parody of him and their names are almost the same but their personalities are completely different. Personality wise I think his counterpart would be wolverine
+ he kinda looks identical to old man logan without the eyepatch
Deadpool is sort of a mix between a parody of Deathstroke and a parody of Wolverine.
I'd say the two characters are pretty similar, the key difference is that Wolverine is a man without a past. Deathstroke is a man with a heavy past.
What do you think?