Not to mention the fact that a significant number of pitchers were 'doctoring' the ball in any number of ways during the Ruth era. Hey, when they expected you to Go-9 and your arm is tired, what would you expect?
Let's also remember that just as many if not MORE pitchers have been roiding as hitters.
But you don't see very many pitchers reaching near records that are held dear. Like Nolan Ryan's strikeout record is virtually untouchable, Cy Young's wins record will NEVER be approached, much less eclipsed (there may not be very many more 300 win pitchers either, unless Mike Mussina or Tom Glavine figure out a way to get there, Glavine having the upper hand there perhaps)....