Deon's next tackle will be his first. However, he made pass offenses one-sided. Offenses would change everything they did to keep from passing the ball to his side of the field. He was also a threat to return every punt he caught to the endzone.
And I don't think we'll ever know if Swan was overrated. Think of the offense he played on. There was only one ball and it had to be spread around for Swann, Stalworth, Blier and Harris. The Steelers were a running team with a fantastic possession receiver (Stalworth). I bet Swann could've carried a team's passing game if he'd had to.