2010 Packers
The rest I really don't care.
In all honesty, I don't know how to rank them. Do I rank by team, or by season? The 2010 Packers are the best team, specially if you consider the injuried players. Best combination of D and O. All the rest of them had a clear dominant side of the field, even the 2004 Patriots who was the most balanced of the bunch. Actually, all the winning Patriots strike me more as teams that knew how to win than teams that were dominant. It reflects in their SBs, that were won by a FG.
But if you're talking about most dominant season, the Packers should be last, or close to last with the 2007 Giants, 2005 Steelers and 2001 Patriots contending.
The Bucs and Ravens have clearly the best defenses of the bunch but clearly the worst offenses. The opposite for the Colts and Saints, though both defenses rose up in the playoffs.
I think in this cap era, it's close to impossible to assemble a trully dominant team. All of them had clear areas of weakness, that if faced against a team that matched up well against them, would have an incredibly hard time to win.