Artist and writer Rob Liefeld, the co-creator of Deadpool, has his own take on the distinctions between the two iconic characters.
Deadpool co-creator Fabian Nicieza has mentioned noticing the resemblances between the two characters after Liefeld pitched the Merc with a Mouth to him.
As with many things comic-related, the tug of war is rooted in the accusations of Deadpool’s status as a cribbed version of Deathstroke.