I think thats debatable. Like I said, you've got back of the rotation starters and 6th inning mop up men pitching today who would have no business being on the field 30-60 years ago. The game changes over the course of time. Pitching mounds get lowered, balls get wound tighter, strikezones shrink, ballparks shrink, batters wear body armor and are protected by the league from pitchers trying to scare them off the plate, the best pitchers have their pitch counts monitored because of the risk of injury to an expensive player...etc. Most or all of these subtle changes have favored the hitter.
Again, I'm not saying Pujols (or Ichiro or Griffey) wouldn't be great in the past eras, I just try to avoid comparing them.