DS and Thanos win.
Thanos can easily take Superman, Gladiator and BRB by himself. He's way beyond these guys physically. He's also stopped a hammer throw from Thor dead in it's tracks before as well. The only thing that may put him down is a Godblast and Thor doesn't break those out too often. Darkseid might have trouble with Thor, but once Thanos pimp smacks the rest it's over for Thor with a 2v1 stomping.