you guys are more knowledgeable than I, but what do you think about the concept that a lot (majority?) of the players caught so far are pitchers? Who has the advantage in a juiced-batter vs. juiced-pitcher matchup? In other words, can the 'steroids era' be treated as a systemic error that tends to cancel out?
Very good question, and it's worth pointing out that the players normally trotted out as suspects (Bonds, Nomar, Bret Boone, Palmeiro, Giambi) are all hitters -- why no odd looks Roger Clemens's way?
When Alex Sanchez was the first MLB player busted, I cried foul: Bust a guy who's obviously not a home run hitter, I reasoned with my usual paranoia, and all testing will be rendered useless, illegitimized by false positives. But I was ignoring the fact that steroids aren't only taken to increase bulk, but also to recover more quickly from muscular injuries.
Since there's no way at this point to go back and determine who did what, or to determine in the present day who gets "more of" an advantage, I suspect the PTB will do as you hypothesize and declare that it all evens out in the wash.
The tragedy, of course, lies in an entire generation of Little Leaguers and Pony Leaguers who have been handed this giant object lesson with no discernable moral.