I'd give it to Iron Fist, assuming he isn't drugged or in Emo mode. Red Skull pretty much just fought like a brawler, and went up against Cap before the latter really developed his H2H abilities, so Danny should have a skill advantage. And the Iron Fist should even things out where damage output is concerned. He'd have to be careful though. If Red Skull lands any hits, Danny is going to be in a world of trouble.