Vargas Vs Vixen

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The problem with Vargas is his lack of appearances...

He owned Wolverine, right?

No, not to my knowledge. They never even met.

You must be thinking of Beast. Vargas had like one combat showing, in which he did extremely well against Hank, Rogue and maybe Psylocke?

Got his five minutes and completely disappeared into obscurity.

Does Vargas have Mystical Healing Factor Powers like Vixen apparently does now?

Not that we know of.

Vargas' powers were... vague. Supposedly, he was a perfect human, much like Captain America or Crimson Commando. But appeared to be more formidable, in his short battle prowess showing.