The game is more interesting with legendary teams instead of everyone winning. All serious fans can rattle off who were on those great Packer, Steelers, Niners, Cowboys teams, not so easy with the Pats other than Belichick/Brady. Can also rattle off those SB losing Bills, Vikings teams. I think most fans prefer that over 32 teams with an equal historical importance.
Those old AAFC Browns teams with Graham, Mottley, Speedie, LaVelli, as dominate as it got. That's why they still have a place in pro football lore.
Great coachs, great franchises, great players isn't suppose to be about everyone. If everybody is winning then just how important is it? Then it's just....ok our turn.
Everybody knows about Lombardi, Starr, Jim Taylor, Paul Hornung, Willie Davis, Ray Nitschke, Willie Wood, Herb Adderley, Forest Gregg, Jerry Kramer, all in the HOF. Now who can talk any other team from that era?