In the new Spiderman film, Peter Parker is bitten by a genetically engineered super-spider that had the best jumping ability, best this and best that, so would it not have had the strongest venom? If it did, why didn't he die when he was bitten? Furthermore, could the spider not go and bit anyone else?
Because it's a comic-book story, and when you invent a comic character, you can bend any rule you like. How did Batman get his costumes and car, and Bat Cave made for him, and no-one ever found out? My wife would know it was me if I wore my underpants outside my tights and left my glasses off, why doesn't Lois Lane recognise Superman? Because these are tiresome reality rules, comics don't bother with them, they just enjoy the story - there's a lesson there for all of us.
The gentically mutated spiders all had different powers i.e. the ability to jump high. There was however, no spider with super venom, therefore Peter Parker would not get super venom abilities or be affected by a poison when he got bitten.
This is a response to the answer from "enjoy_eels":
You are mistaken, the woman clearly says "14 Super Spiders" all having these qualities. If they only had one good quality then he would only have one, but he has lots! I can't believe they would create a super-spider with such weak venom. I know it's only a film and it's not real but it is flawed. Andy Hughes talks about Batman's cave being a mystery - but it's not! Bruce Wayne inherited a lot of money from his parents, and Alfred was his great Uncle.
Mecooper - are you suggesting that Alfred built the Batcave and Batmobile? I know he made the costumes but the old butler couldn't have fitted out whole cave, even if Batman and Robin helped out I still can't see that working!