I couldn't get past the first paragraph. I think that egghead way of trying to convert everything into numbers can't accurately be done with football. It has proven to work in baseball to some extent, but even then, there is no way to quantify greatness, like 'The Jeter Flip' Or Kirk Gibsons game winning Home Run in he World Series when he could barely walk much less swing affectively enough to hit it out of he park.
Measuring a guys will power is not possible and in football that is the biggest variable.