No offense, but that's absurd. DC and Marvel generally rank about even as far as crap movies go. Superman IV, Batman & Robin, Constantine, and Catwoman. Hulk, Daredevil, Elektra, Punisher, and FF. All in all, I think Marvel has some genuinely well-written, well-produced, and well-acted movies like Spider-Man 2, Blade2, and X2.
On the other hand, Batman Begins blows Marvel movies out of the park when it comes to adult storytelling. But, that's how it's always been, even in the comics. DC is older, and, thus, has more of an adult feel to things. Marvel is of the moment, and goes with the trend like kids do.
Calling one superior to the other is rather silly. It's all in your preference....