And how exactly do you know this?
The real reason why Pujols has stuck only at 1B it's because it's the position that takes the less toll on his body, and this i heard from Pujols himself in an interview with dominican broadcaster Yancen Pujols.
And the fact remains, that Ben Zobrist is not even in the same league as Pujols, not even if he played every position and pitched.
Stop it.