This is the problem with moral equivalence in judging media bias. One side can slide slightly left and still be almost completely factual (if slightly illogical), while the right can be neither factual nor logical - but we are made to pretend that the biases are equal here.

As a general principle, and I know it's not a very wise thing to say, left-leaning sources are on a different dimension of factuality than right-leaning ones.