Really? In my country, CNN is Coca cola and Fox is Dr. Pepper
For me, Coke tastes like acid, and Dr. Pepper is sweet and spicy.
But... uh... that doesn't translate well when applied to sources for "news".
Also, I'd like to emphasize what someone said elsewhere in this comments section: the rest of the world doesn't see the US through the "CNN vs Fox" lens, that's almost exclusively an American phenomenon.
Ubiquitous (distribution) versus relatively limited (distribution).