GLAAD watched a whole bunch of TV this past year and rated the networks on LGBT representation. ABC came out on top, then the CW, CBS, NBC, then Fox. None of the networks was rated as "excellent", only ABC was rated as "good", and only Fox was rated as "poor".
The report indicates that several of the networks need to improve on representation of non-white queer people, especially ABC, and comments on some of the negative representations that Fox has been providing.
You can read the full report here.