One difference between the characters is, for the most part, that Peter Parker is great at being Spider-Man, but not that great at being Peter Parker. Matt Murdock, however, is great at being Daredevil *and* being Matt Murdock.

That's not true all the time. Matt Murdock hasn't done any legal work in quite a while, and there's the whole "running the Hand." Peter Parker now has a great job and a great new girlfriend named Carlie. (Don't hit, I know most people don't like Carlie.)