At least most liberal media uses facts and data and tries to understand the motives coming from the other side. And they're also not afraid to knock down one of their own if they screw up. MSNBC was probably the hardest on Obama after the first debate. Right wing media has become almost cult like, showing intense devotion to the Republican party and failing to tell the entire story
This is the most salient point. There is no equivalency between Rachel Maddow and Rush Limbaugh. The liberals on MSNBC are fact-driven. They are not in a fantasy world. Their arguments are made on the merits. Conservatives are delusional as has been so clearly illustrated by this election cycle.