Because there was a long lasting, mostly successful philosophy that you take guys that 100% wanted to be there and MADE THEM into quality AA's and Champs. Chasing guys and having to convince them to come, doesn't give you the feeling that you are getting what you want, no matter how high the kid was ranked coming out of High School. Mind you, when something works for a while, it is pretty common for most not to "innovate" and catch the change before the change is blaringly obvious and absolutely necessary.
Again, it comes down to PSU recruiting at an unprecedented level. Sanderson was always a great recruiter, but going to PSU and building them up truly doubled or even tripled that recruiting power. So now, Sanderson can not only truly go recruit the hard to gets, but he actually can benefit from the old philosophy that the Brands clung to. He is now getting a bunch of guys that 100% WANT TO BE THERE.
They have created an unprecedented machine and it only makes sense that they are reaping the rewards at nearly all levels...