Wade Wilson vs. Slade Wilson

Those of you who have seen 'Arrow' would already be familiar with the character named Slade Wilson a.k.a. Deathstroke. And for those of you who haven't. This character started as a rip-off of DC's famous villain Deathstroke. Marvel jokingly decided to name it Wade Wilson. The two characters are very similar. They are both experts at using different weapons. They can both heal quickly. They almost have the same costumes (two-toned). They both want to kill the person who ruined their lives. Despite these similarities, they are way different.