31 - The number of films based on DC Comics properties/imprints released during the “modern Marvel Cinematic Universe era” starting with Iron Man (and including titles from imprints like Icon) compared to Marvel’s 28.
16 - live-action films based on DC/Vertigo/Wildstorm properties released between 2004 and 9/21/2014)
27- animated DC Comics-based films produced in that same period. Plenty more are in the works.
10 - animated series in production and airing during that period, not including the DC Nation shorts. Teen Titans Go is still in production, Justice League: Gods and Monsters Chronicles, a three-part series, debuts online this spring
3 - live-action series (2004 - 9/21/14) with five live-action series coming soon (Gotham starts Monday (9/21), The Flash starts in October, and Constantine starts later in the year, and I, Zombie and Preacher start in 2015) and several more in various states of pilot development with Lucifer actually airing soon on Fox.
Warner Bros is hardly a company “sitting on their DC properties.”