I would put that 2004 Bills defense against anyone. Ranked 2nd in the league at the time they had Schobel, Fletcher, Spikes, Fat Pat, Sam Adams, Clements/McGee manning the outside and a young Jabari Greer. Absolutely would crush even today.
On the other side Moulds & Evan’s at WR (a top 5 tandem) middle of the pack QB Bledsoe and an underrated McGahee who rushed for 1100+ 13 TDs. Their problem was the line was crap. Still went 9-7, but largely because of their defense being so great.