this was done hehe in 1981
I remember it & I remember underdog Spidey winning because Superman had been weakened by a Luthor kryptonite attack at the time...
http://www.geocities.com/utherworld/...perspidey.html
the page also mentions a second Superman/Spider-Man that also featured Wonder Woman & The Hulk, thus matching things up a bit more evenly.
Originally, Superman was not able to fly & only able to run blindingly fast & "leap tall buildings in a single bound" due to the gravity being different on Earth as opposed to Krypton. It was also only his suit made from his baby blanket that deflected bullets in the beginning. The radio show invented many of Superman's advanced powers as did the Fleischer cartoons. By WWII, Superman had become invincible & before the U.S. involvment, DC published a cartoon in Look magazine that featured Superman ending the European conflict in short order & hand-delivering Hitler (& I think Mussolini) over to the U.N. for punishment. that was roundly criticized as insensitive. By the time the U.S. got involved, DC wisely began having Superman fighting Nazis, but not solving the whole crisis so handily. The History channel and also A&E recently aired a documentary recently called "
Look, Up in the Sky: The Amazing Story of Superman" directed by Ken Burns that Kevin Spacey narrates. There was a bit of an odd moment near the end when Spacey was describing the new Superman Returns movie & he keeps referring to himself in the third person.