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That was a confusing way of saying:
"Line up the ten or twenty or fifty best players at east position side by side (the catchers next to the first basemen etc)...and apply a nultiplier to the catchers until they have the same number of wins as the other positions."
How much do you have to add to Johnny Bench and Gary Carter to make them match Lou Gehrig and Jimmie Foxx. :) Only on a larger scale than two players.