Technically, that is true. But I would bet there would be a larger CR variance, in the "as cast" combustion chamber size cyl to cyl.
Actually what I meant by CR height was that some pistons are made as "low compression" pistons, with a different CR. I have seen these listed on E-bay. Most "normal' Replacement oversize pistons, have the cr adjusted for the oversize, so they retain the stock CR.