There are dozens of positively portrayed gay characters on TV while they make up about 2-4% of the population. There are zero positively portrayed Christian characters on TV when they make up the majority of the population. Yep, gays are treated so unfairly by the networks and media.
Well there was one show, 7th Heaven. But that is now in reruns.
Whenever a Christian is portrayed, s/he is usually a wicked right winged kook — you know, anti-abortionist pro lifer, or a gay hater — and never in a good light.