Of that you can be sure! Part of Belichick's genius is ensuring that nobody on his team ever gets their head too swelled up. The Patriots are very fortunate to have landed him. I always wonder what would have happened had he remained "HC of the NYJ".
Don't forget it wasn't just Belichick that came over. It was most of Parcells coaching staff and his front office including his son in law Scott Pioli.
Or if Victor Kiam were still their owner..???