Marvel has had more quality, DC has had better quality.
Marvels good ones- Blade (and 2), X-Men (2 and the reboot, Last Stand was awful), Spider-Man (and 2, 3 was awful), Iron Man (and argurably 2 and 3), Thor (and 2), Captain America and the Avengers. Spider Man and the Avengers were probably two of the most influential superhero movies with what the gave studios the confidence to do.
13
DC good ones- Superman and Man of Steel, Batman (and Returns), Batman Begins franchise, Watchmen. Superman (the original) was influential and the Begins franchise was as well.
8
Marvel has more hits though and IMO a better stable of characters. DC has Dark Knight which trumps all.
Batman is probably the best character overall, Superman is easily the dullest IMO.