Well, to the average consumer, based off of numbers, there isn't. As Mo has stated, core shape dictates motion, so numbers before drilling are going to be different. Have never seen a Radical drill sheet, so I can't speak to the paperwork you're speaking of, and its a cool idea, but I know a lot of shop operators who will throw that literature in the garbage and still do a pin next to ring MB right of the thumb and call it stacked. All the cool weight block technology is great, and I always applaud Mo for his weight block design, but if you're not following the instructions on how to maximize diff and intermediate diff, its fruitless.