Interesting question, from an individual player standpoint maybe RBI is not a good measure, but for the team if Player A is going to have a .900 OPS and that is constant regardless of position in the lineup, I'd rather have the higher RBI number.
It's really remarkable how much high OBP from your leadoff hitter factors into the model batting order research. I recall back in the bad old days that many of the optimal lineups had Dunn leading off.
