If you think the Ones are Universe busters then they beat base Thanos, I doubt it though. If you use Legends material we already see a One going at it AKA Abeloth and her best feat was destroying some City and I think shaking Coruscant but nothing what even someone like classic Drax can do AKA rip out stars and smash planets with their bare hands.
Originally posted by XSUPREMEXSKILLZ
I dunno. Thanos was able to piss off Galactus by blasting him hundreds/thousands of feet and destroying his helmet, and IIRC he was capable of nearly solo'ing The Avengers.
Haven't read that for a long, long time, but I'm pretty sure that was with some Infinity Gems.
Anyway, normal Thanos went head-to-head with classic Odin, and has grown since. He'd beat all of SW.
With the Infinity Gauntlet, Thanos rewrites the history of SW like a big play to suit his galactic theater.