he wasn't ground into dust by T&A, he actually took a lot of their attacks both energy blasts and a mighty physical blow.
he was hurt but still capable of summoning sufficient stamina to handle/channel the Big Crunch. and of course, just to illustrate what a feat that was, neither T nor A could escape from it once Surfer hit them with it. yet Surfer managed to bring the Crunch energies to them, without dying in the process - basically lasting a good deal longer against the awesome power of the energies than they seemed to do.
Surfer getting one-shotted was PIS imo, but it happens to Surfer a lot that he gets "jobbed out".
I mean, Surfer's beaten a juiced up rogue Watcher, one who had become a dimensional god!
how on earth does Odin one shot someone of that calibre?
I'm not saying Surfer wins, but I'm thinking it'll be a situation similar to Thanos - Odin ... a long drawn out battle where Surfer will prove to be a worthy opponent.