Cycling , where now ?

The recent mess with Floyd Landis testing positive for high levels of testosterone brings up some interesting questions .

Is cycling so deeply steeped in drugs/performance enhancing tactics as we recently start to feel it is or we are on witch hunt emanating from the animosity between WADA and UCI ?
Can the agencies concerned with the doping can say conclusively that the tests are to be relied on . After all after Tyler Hamilton was dtected with different blood strains there were a lot of possibilities such as Tyler is a chimera , the test used hasn't been tested enough to be 100% reliable . For instance is it not possible that Floyd Landis has an exceptionally high testosterone/epitestosterone ratio ? I would expect anyone to ride for three weeks over gruelling terrain with another 200 motivated super athletes to have a higher level of testosterone . The average testosterone/epitestosterone is taken as one , what with these guys ? Unlikely to believe that a guy pushing paper and them would have the physical traits .
A lot is made about Armstrong's exceptionally large heart , his lactate threshold , his VOX ratio putting him in a physically superior category . Maybe we are missig something here and there are more of these super beings around .

Of course it is equally likely that cycling is full of dirt and needs to flushed completely .