MARVEL: Doing things logically how fans always dreamed, making the biggest success possible.
DC/WB: Trying their damnest to catch up to Marvel and imitate them without looking like they're copying them, has the greatest characters but utilizes only a tenth of their potential, molesting Superman. No plan, a half assed plan at best. "Let's cut corners and get to our Avenger$ flick already!", nevermind that MARVEL did it with some authenticity and appreciation of their characters, here's a manufactured superhero flick we expect to make the same money!".
MARVEL: higher artistic integrity.
WB/DC: very little to no artistic integrity.
I've always been more of a DC guy since I have more favorite characters there and this saddens me. WB needs people that care and believe and buy into their DC characters...instead of trying to change them all to be Batman or just flat out missing the point with them.