it may not be that bad... so far they are doing pretty good with "Arrow"....and they got a "Flash" series coming up.....
Yeah, they have the small screen down. Marvel, on the other hand, is struggling there.
I think that's a bit of an exaggeration. DC has one pretty good show in Arrow. Marvel has one pretty bad show in Agents of S.H.I.E.L.D.. So yes, Marvel is struggling, but DC isn't exactly having wild success with television.
Smallville was certainly successful, running 10 seasons, but I'm not counting it for this discussion because it's not part of any larger DCU. There's been talk that Arrow may end up connected to the movies they are working on.
Marvel has a few series being worked on, hopefully they can improve over AoS. Daredevil, Agent Carter, and at least one or two others have been discussed.