Prime T-3000. Infinity War Thor, but no lightning cloak, and he is unarmed.
Scenario: The two combatants are locked in an inescapable room, and must fight until one character is killed or destroyed.
My assumption is that Thor is unable to kill the T-3000 with pure physical attacks alone (absent his lightning), so the conclusion for me is that he cannot win. But can the T-3000 kill Thor? Or would this fight end in a stalemate with neither combatant able to kill the other?