Thanos' only chance is to send his Herald, Quanchi, to intercede on his behalf. Quanchi would pummel Superman with "sound" on-panel proof that Thanos is too much for PC Superman to handle.
I don't see why not. His strength and durability>>>>>>Surfers and he was faster to boot. Faster than the PC Flash. He could speedblitz Surfer and destroy him before Surfer could even think about weakness exploitation.
He's stronger than Thanos, just as if not more durable, and way too fast for Thanos to even hit barring PIS.
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“Where the longleaf pines are whispering
to him who loved them so.
Where the faint murmurs now dwindling
echo o’er tide and shore."
-A Grave Epitaph in Santa Rosa County, Florida; I wish I could remember the man's name.