Statistically Denver was every bit as good as the Vikes offensively. Interesting note the Niners actually outgained both teams by a significant amount of yardage.
Denver was better at RB, Offensive Line and QB than Minnesota was, and was better on special teams and defense.
I think Minnesota was good that year, but it would be tough to convince me they were better than Denver. Especially after the ease in which they dismantled the Atlanta team that beat the Vikes. Not to mention they were the defending champs. There is no doubt in my mind Denver was the best team in the league that year, and they proved it on the field.