‘From all accounts, the first N.F.L. regular-season game in Canada was a bore. Organizers had trouble filling Rogers Centre in Toronto on Sunday, the atmosphere was lifeless, and the game was a field-goal festival (Miami beat Buffalo, 16-3). The real drama played out behind the scenes, where the N.F.L. has stirred concern that it will eventually muscle out the Canadian Football League. The issue is one of Canadian identity.’