It's not about the schemes. It's about running your team during the week to execute *whatever* tempo you want on Sunday (and granted most of the time that's FAST, but not exclusively.) Other teams have tried running the "offense" or some variation of it, or running uptempo. This is more than that - it's making sure your players play breakneck at all times in practice so that Sunday is slow by comparison, and it includes an innovative weekly routine for maximizing game-day performance based on recovery times and modern olympic training approaches. If Chip keeps winning, soon enough every program is going to be trying to emulate how the Eagles PRACTICE, and structure their organization.