Johnson's quip that Chambers must have had "a lot of bad days" assumes that the people who beat Chambers were clean, and also takes his quote somewhat out of context. Of course a 4:40 miler can take all the drugs he wants and never win a World Championship final. Drugs won't make me a world beater in the 1500m but they can turn No-name-kenyan's eighth-place ability into first-place WR ability. Perhaps Chambers wasn't talented enough, didn't work hard enough, or didn't pay enough for a good pharmacist. Drugs aren't a free pass. You have to take the right ones at the right times, work hard, and have the ability to be very fast without them to do anything noteworthy at the world level.
Sometimes I think Johnson protests too much for a man who set the 200m WR at what athletes call the HGH Olympics. Everybody and their moms were on drugs in Atlanta, and he happened to win clean by a huge margin. Right. Lance may deny his use but at least he doesn't prance around on his high horse saying that drugs don't work. Biochemists are singing a different tune.