Coca-Cola at least can be sued for false advertising whereas news organizations can say anything with no repercussion.
You are correct though that news organizations can say anything as well. When deciding what to believe with journalism, one should take into account what claims are being made, the journalistic reputation of who is making the claims, and the weight of evidence being presented. Again, more information that should have been part of your education, but apparently our education system no longer functions.
But that's not what media literacy is about. Misleading media is rarely libel or advertising malpractice.