Thing is, the year BB said that (2009), the Patriots led the league in offensive DVOA. They never struggled on offense the way KC is struggling. Then Welker got hurt in a meaningless game in Houston and everything that could go wrong did against the Ravens.Agreed, but until they are knocked out I think you need to be fearful that they'll find a way to turn it on. They clearly have the talent.
That said, watching their offense, it reminds me of the Pats documentary when BB was saying his fear was teams would figure out how easy it is to stop their offense if they doubled Moss and took away Welker. Seems similar to what teams are doing with Kelce and Hill.