I think there's no major difference if you believe in what you've just said.
Hardly, it means one is controlled or at least intimidated by the Kremlin. The others are controlled by a variety of interests, with the common denominater for most, not all, being to make money for the corporation they work for.
This will give a right wing view for some and a left for others, and a mixture depending on the independent reporters they have reporting live from the scene.
At the end of the day if you are really interested in whats going on its easy enough to filter out the sh!t. Another words its obvious what news is just propaganda.