They should have won at least one of those four Superbowls - in particular, the first one vs. the Giants. "Wide right" only gave them a scapegoat. They were easily the most talented football team wearing uniforms that day. Unfortunately, they were outmatched in the coaching department. That team had more stars than most teams ever do. Jim Kelly, Andre Reed, James Lofton, Thurman Thomas, Kent Hull, Will Wolford, - lots of pro bowlers.
Bruce Smith (NFL defensive player of the year that year), Cornelius Bennett, Shane Conlan, Darryl Talley - outstanding defensive players. More pro-bowlers than the Giants had. Steve Tasker - phenomenal on special teams.
There was no way the Giants should have beaten the Bills. But, they managed to control the ball for more than 2/3's of the game. That's coaching.