They're similar but not the same. A bias is (in this case,) when a persons opinion on something creeps into their writing or speech patterns. It's a perfectly legitimate thing in that kind of news editorial setting. It's only a bad thing if a bias starts leaking through what is being advertised as a purely information reporting kind of story or news show.
Now that's a whole other can of worms in and of itself and while it's an interesting discussion, it doesn't fit in with this screaming fest at a guy for sharing an opinion that dares make show the king of New Orleans in a less than golden light.