If I had to bet my lunch money play Laird every day and the difference in BA left verses right will not be near what the real life split was. I know, blasphemy to imply a card would not exactly reproduce a season.
What I suspect is because of the small sample size of his real life numbers the card created is influenced some by his past years performance and L/R balance tendencies. So maybe his card this year is a little better than pure real life numbers might call for and his card verses righties is a little worse than the pure numbers would call for. This is not unprecedented in strat history. And my belief on this is partly based on memory of things written in the old strat fan magazine.
I might ask for a show of hands of all those who remember that publication and subscribed but not all may wish to give their age away like that.