While this is definitely true, I wonder why people don't also see the opposite which is also true.
Peyton, Harrison, and Wayne have many years together and have peaked. They will never be any better than they are now, and in fact, with age and injuries will soon begin a decline into a lesser unit, if it hasn't happened already.
Pats passing game should keep getting better and better and hasn't come close to peaking.
Granted, the potential of the Pats passing game may not be as high as the Colts, but the gap is rapidly closing with Brady's familiarity with his receivers.