The examples you give are from extreme papers and partisans. That is not a good example.
Two separate newspaper articles from Oklahoma papers, written independently and emphasizing different parts of the same speech have a reasonable degree of reliability. People who reported on these statements BEFORE the newspaper articles were published must also be assumed to be fairly truthful.
Your standard of reliability would allow no criticism of President Bush unless you yourself actually heard him say something or he published it on the White House web site. That is an unrealistic standard.
If the New York Times and the Washington Post and James Carville all said that the President planned to exterminate the Jews in gas chambers, and the President denied it, I would want to see some evidence stronger than their word. I guess you wouldn't. That means that you are a much more credulous person than I am (I was previously of the opinion that I was particularly gullible, but it looks like you beat me there)