Ironman disintegrates them. Especially Spiderman and Wolverine. Wolverines organs would be all gone and nothing left but an adamantium skeleton. Hes unable to heal back from that. He and Spiderman die instantly. He also creates sonic booms and blows Venoms symby off. Carnage's weakness if fire? Not a problem for Ironman. All he really has to do is stay out of range. Hes to fast for either of them and stronger as well.
Ironman wins 8/10.