The evidence is not just the tests, but overwhelming amounts of eye-witness testimony. Pretty much anyone who has been around him closely has seen the evidence of it. From his bike mechanics to teammates. They saw the drugs in his house, saw him using them.
He even failed tests way back in the day and was able to get his lawyers to get them thrown out on technicalities about "handling". But believe what you want, nothing will change your mind and his current tactic is tailored for folks like you.
If you want to believe there's some kind of conspiracy and people just are out to get him I can live with failing to have convinced you otherwise but you are clearly doing so while rejecting all available evidence as being somehow tainted, motivated by spite and revenge.
But you know, even then we are talking about an asshole of Biblical proportions. One who is able to get just about every friend and associate he has hell-bent on proving he was a doper, not because he actually dopes but just because they all are willing to stick their necks out on the line (even confessing to their own doping etc) just to stick it to the man.
He's either a cheat and everyone around him is testifying to it, or he has the amazing quality of pissing everyone off so much that they decide to all get together and try to stick it to him by accusing him of cheating falsely. No matter what, my qualm with him is with the fact that he oozes douchebaggery. A born asshole.