Sabretooth wins... easily.
He has thermo vision so Spidies invisiblity is a non-factor and they are comparable in both strength and speed. We are talking about a guy who has got into knuckle dragging slug fests with the likes of Ms Marvel and more then held his own. He has even koed Rogue in a few hits... and even before his last upgrade he took on both Spider-man and Punisher at the same time. Sabretooth wins, he is too visious and too much for Spider-man to take down.