This was from the May Developer chat.
Will a 7'0" C with 70 LP have an easier time scoring than a 6'4" C with a 70 LP? "With all other ratings being equal" I was told before that height didn't have an effect it was just the ratings. (utvol4life - Pro - 2:37 PM)
I think the only adjustment that could be made is to account for extreme differences in height. In general, the rating accounts for their height. So you can look at your example like this: the 7'0" player may only be a 50 LP if he were 6'6" instead.