In a perfect world of wishful thinking, equivocation (what happens in DC stays in DC) and the like I'd like to say Superman. But the reality is that there isn't a single writer from either company who'd write Superman beating Thanos physically sans a massive amp. Like having a yellow sun compressed and placed into his chest or some shit.
Originally posted by Stoic
Taking a closer look. Not even Tyrant dominated Thanos physically, nor did Odin. They were winning, but it wasn't exactly a domination. I believe that it would take more based on, on panel proof. An out right domination, would be what Morg with WOL did to the Gabriel Airwalker construct. I mean he ripped its arm off and began to trash it with it. That's not what Odin, or Tyrant did.
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I'm not even certain pc Validus could do it. PC Omega, maybe.