It is irrelevant how many true things CNN says, or how broadly other organizations agree with them. CNN is still not presenting things in an objective way. Which means that those you would like to convince will flip the bozo bit because of the bias, and never even hear the evidence.

Note that we seldom notice bias in others when it matches our own. So CNN's bias is invisible to its core audience. Just as Fox News' bias is invisible to theirs. But it can't be missed by anyone whose biases differ, or who are actively looking for whether things are presented with bias.

But http://gatewayjr.org/how-a-popular-media-bias-chart-determin... gets it right. CNN skews liberal, and isn't particularly accurate. It is better than Fox News...but not by much.