Previous Post I remember in a What if Peter says that he doesn't know how strong he is when he was going toe to toe with Tony. When properly motivated we have seen what he can do. So spidey mans who would you put him on par with.

According to the old "Official Handbook of the Marvel Universe" stuff, Spider-Man is capable of lifting 10 tons under optimal conditions. Post Avengers Disassembled and Thye Other, his strength level was boosted to being able to lift 25 tons.

However, he also rarely uses his full strrength. He is constantly pulling his punches in combat to avoid causing serious harm or killing an opponent.

Finding strength parallels is a bit fuzzy since many "strong" characters have been amped up in recent years. For example, Iron Man and Luke Cage both used to be about his strength level but each seems to be written as much stronger now. Obvious parallels are the Green Goblin (Norman) and Spider-Woman (Julia and Jessica both). Each member of the Wrecking Crew is also about the same strength level.

Here's a website that you might find useful:
http://marvel.wikia.com/Strength_Scale

I'm not sure on the sources for all their data, and keep in mind writers tend to be fluid with these things, but there you are.