The at bats one is interesting to me. I think that is a product of the pre-1970s thinking that a walk was laziness by a hitter, and not a skill. So, ABs actually matter, instead of plate appearances. It goes waaaaay back to the day when a walk wasn't viewed as a valuable at bat. I think they could squeak in some other stats, but all those you list (except pitcher wins) actually do tell something of a story. doesn't make them good predictors, but the past did happen, and those stats do tell a story.