http://marvel.wikia.com/wiki/Steven_Rogers_(Earth-616)
http://marvel.wikia.com/wiki/Peter_Parker_(Earth-616)
Strength, powers, skills are about two thirds through each article. Spider-Man's strength is supposed to be 10 tons, in his original body. There have been times when he as been mutated and was stronger then that. The article doesn't clarify how strong teenage Peter is opposed to adult Parker. So, it is very likely that the limits of the Spider-Man from the movie are lower then that. Captain America is suppose to have the strength of 10 men. He can bench press over a ton. He is stronger then any peak level Olympic athlete. But, certainly, not as strong as Spider-Man. On their power grid for strength, Cap is a 3 and Spider-Man a 4.
The key to this fight is training, experience, and combat skills. Cap is considered one of if not the greatest tactician on Earth. Teenage Parker has been Spider-Man for about 6 months. As an adult, with experience and training (some of which was provided by Cap himself), he can "hold Captain America to a standstill." But, again, this is not that Spider-Man. On the power grid for combat skills, Cap is a 6 and Spider-Man (Adult) a 4.
I think the movie did just fine by both Parker and Rodgers. I like both characters from the comics, though, I do like Spider-Man more. One thing I'd like to mention is that I never ever dreamed Chris Evans would ever do such a marvelous job of playing Cap. Marvel has done such a wonderful job of casting for their movies, and bringing each of these characters to life.