Super Bowl Bound

It is soon going to be East vs West Coast as New England Patriots battle Los Angeles Rams on February 2, 2019, at The Super Bowl.
Both playoff games went into overtime, but only one team will have played, not one, three, six but nine times.
Does the Brady Belichick tag team prove once again that all they need to continue #NFL dominance is the best Coach and Quarterback in the league and anyone, as well as everyone else, can become interchangeable?