Ben has 1 decisive victory over the Hulk, that I know of. In Fantastic Four #320. This was when the Grey Hulk (the weakest Hulk incarnation-base strength 70tons) took on the enhanced pineapple Thing-100ton+ strength. This fight took place in the daytime,which meant Grey Hulk wasn't at his best
Toxin is a chump. When I read his debut issue I thought it had to be a different continuity. Black Cat didnt even recognize the Carnage or Venom symbiotes ("what was that thing?") and in general it was terrible writing (thugs are robbing a bank, cops say there are 7 hostages inside, inside the bank like 20 people are shown laying down covering their heads). Basically they jobbed out established characters to make new one. They did it with Omega Red jobbing to Chamber, they do it with Spider-man and the X-Men constantly, and I personally just overlook it and forget it ever happend. I really wish they would take the time to build up these new characters and let them be believable threats rather than just having them chump out an established guy in their debut.