Reagan did not win in an complete and utter dismantling of Carter either. That was true electorally. The EC is designed to create a clear winner. Popular vote wise he won by 10%'ish. That's more than Obama and yet that was considered a landslide. There's been other elections where the popular vote was as much as 60% and some in the 30% range.
Bill Belichick learned to film signals of opponents from the former Chiefs, and Charger's coach Schottenheimer. Others like Edwards, Johnson and Cowher did too. They learned from the CHEATS and CHEATERS who still couldn't win.