Armstrong was way ahead of the testing and when he got tested positive he just paid people off. Armstrong always got stronger in the mountain stages and that is when EPO does the trick.
Remember, Armstrong wasn’t the only one doing it. They were pretty much all doing it if they were contenders. It is a dirty sport.
All hearsay, no proof. There are so many people who want to bring him down, that if he tested positive, he would go down.
If, as you say, all the contenders were doping, wouldn't that negate any "unfair advantage" Armstrong might have gained by doping?