Let's look at a couple of cyclists.
For the sake of argument, let's call him Tom Zirbel.
Tom has won a few stages and a few races. He's a competent time trialist. Tom failed a doping control in December 2009 for DHEA. Tom maintains that he did not knowingly dope. He is given a 2 year suspension.
Again, for the sake of argument, we'll call him Alberto Contador.
'Bert has won a few stages and a few races as well. He is also a competent time trialist as well as a good all-rounder. 'Bert failed a doping control in August 2010 for clenbuterol. 'Bert maintains that he did not knowingly dope. He is given a 1 year suspension by the Spanish cycling federation*.
So, it's not about who you are, huh?
*as of my writing of this post, the UCI has not weighed in yet. They may still suspend him for 2 years, but then again...