I think it is pretty much unanamous the Pujols is the best hitter in baseball, maybe not best overall player but certainly best hitter. There is really nothing that Mauer does better than Pujols at the plate. Pujols strikes out less, walks more, hits for a higher average with more power and even steals more bases. When some is having the best year they have ever had, then they are infact by definition having a career year, like Mauer this year. Why does being a catcher prevent him from hitting .400? If anything, it may help him a little bit because the days off give him fewer ABs making it easier to hit .400. It is easier to hit .400 over 500 PAs than 600+PAs just because it is difficult to keep that high level of play up for a long time. Simply because of the wear and tear on his body. If Mauer ever moves to first base full time he would be my bet to be the next 400 hitter.