Thanos wins, physically they aren't much of a threat. He has taken Warrior Madness Thor WITH the power gem. He has taken the likes of Thor, Thing, Herc and Hulk simultaneously. Thanos can effectively take 5 or 6 powered beings on his own.
Sorry, but Thor is pretty much a non-factor here...as his main strength, Mjolnir is ineffective on The Mad Titan.
And yes, Thor gets Thanos's pimp hand as usual. He is nothing to Thanos..therefore Superman will not trouble since they are about the same level.
Oh my, Thor getting owned AGAIN??
Champion is as good as it gets physically, and even he gets OWNED.
Even Superman knock-offs get owned with supreme quickness.
And I don't think I need to post scans of Surfer having 0 effect on Thanos. I'm sorry, but these little characters cannot stand up to his might. They go down 10/10.