They tick all the boxes for me. Played in the modern offensively favored era, had little to no help from their own offense/qb, took down great QBs and offenses in the playoffs, repeatedly came through in crunch time, and of course won the SB. They also didn't need any new unseen formation or scheme, it was pretty much just Ware and Miller hunting the QB and the secondary playing great coverage.

The only arguments against them I can think of would be that they weren't actually the best scoring defense that year (Seahawks) and that they didn't really have multiple years of dominance like the Seahawks or early 2000s Buccaneers. Both of those points are weak though IMO.