You're arguing against an assertion that was never made. Nobody ever said that Fox News is unbiased. The Pew Research Study shows that Fox News is biased and MSNBC is MORE biased. You haven't presented a shred of evidence to prove them wrong.
I have no problem with this assertion if the data supports it. But I have no particular fondness for either news source. From what I've seen, most of the older, more well known media channels report news on their front page pretty much as you would expect, who what where when why, but it's the talking heads, the opinionators that page links to, that's where the real partisanship begins.
Did you hear Limbaugh's opinions on Christie now? "Man love"? Jesus. Does anyone on Team Right realize how much damage guys like Limbaugh are doing to your own party?