Yes. This is so true. It wasn't all that apparent at the college level, where its all about the systems and the players and most just figured that he was a decent coach that was recruiting great players into his plug and play system. No one thought it would work in the NFL. People saying for years that "the talent gap isn't as big, the players are too fast and too smart for his system to work in the NFL."
Guess what - it's working.