Whoa. The allowable T/E ratio was 6:1 for many years, it was lowered to 4:1 around the time LA retired (which might not be a coincidence, who knows). Let's assume he was able to exceed this limit, though. How is it going to turn him into a climber? Testosterone helps all the muscles, not the ones below the belt preferentially. It's particularly useful in accelerating recovery, and is probably particularly important in pre-race training, but again, better recovery, meaning harder training is possible, still does not turn a one day rider into a climber. The Lance-had-a-better-program folks still have not addressed this point.
One of the interesting things about George's leaked testimony is that he basically said he and LA shared EPO. Likewise, Tyler said he watched LA inject EPO,and implied that everyone was basically doing the same thing. Nothing about how LA was using something that other riders didn't have access to, or that LA had a better EPO program.
If LA, say, really had access to HemAssist or some other untestable PED, why was he fooling around with EPO? For his first two Tours, of course, there was no EPO test, so probably he had no reason to consider using anything else. But by the same token, the burden of proof is heavily on those who claim he had an edge over other EPO users. Beginning in 2001, when there was an EPO test, LA probably switched to blood doping. If he really did use HemAssist, PFC, or some other exotic oxygen vector, maybe some of this will come out in the investigation. But until it does, let's keep in mind that there is no real evidence that LA had a doping edge over other riders.