Venoms stronger and definately meaner but has never shown to be faster.Problem being Venoms not TOO much stonger than Spidey and isstill quite a ways below the Thing.
Spidey might steal a couple from thing via webbing but Venom burns the suit out trying that strat [in fact hes lost an early battle with Spidey because of that].He can take a bit more of a beatting than Spidey could but most likely its not gonna make much of a difference
This is completely a one sided fight it would defiantly go to The Thing I mean the strength Factor alone is more then enough to prove that he can win this fight don’t even get me started on The Things invulnerability as compared to Venom’s pretty much it’s a couple blows from The Thing and Venom is out