Quoted from jar155:Run away from this thought. Guardians is decent on its best days while Spider-Man is one of Stern's best.
Spider-Man also has a depth to its code that Guardians won't match. The code is bland as all get out on Guardians.
Once the new game shine wears off on GOTG, which took about 10 plays for me, you'll be wishing you either had your Spider-Man back or had rolled the money into a different game. Get more time on Guardians first. Really make sure you think it will hold your interest in the long run.
When was the last time you played guardians? The new code on it is excellent.
All my friends are having a blast playing it too.