Really that much ? That's damn big difference.
I was asking because I'm still a newbie right now and I plan to train bigs. So I was wondering is it much better to train only one position and be the most effective or training two positions is just slightly less effective.
Another question if you could answer would be when you have 7'3 player and 6'8 player that 7'3 player will raise his inside skills like rebounding, inside defense, shot blocking faster than 6'8 ? And 6'8 will raise outside skills faster than 7'3 ?