There’s nothing like petty snark to back up a completely baseless assertion, is there?
Thanos loses plenty on this board. But it’s incredibly difficult for characters below Skyfather-level, which all of these guys are.
Had it not been post-Crisis, and thereby the suckiest version of Darkseid of all time, he might have been able to do it on his own. But it IS the aforementioned super-extra-sucky-sauce Darkseid, so he can’t.
And this is why Arby put all of these characters together against Thanos, to see if they could adequately beat him. Turns out not really on this occasion (Asimov-god-sex aside), but none of us go into these threads thinking “whatever happens we MUST make sure Thanos wins”.