If we let you get away with writing them as gods, yes, they would. But we don't let you get away with that, so the fact of the matter is, when Thanos gets double-teamed by my ubers, he falls. And so does Genis, when he gets double-teamed. That's why we win: we double-team your ubers individually.
And Genis doesn't see it coming. Because his ridiculously overwritten precog power doesn't work in combat. You said so yourself.