Here is just one example:
Breaking Down How New England Can Use Familiar Tactics to Confuse Peyton Manning | Bleacher Report
The Pats always had Peyton's number. I remember how Ty Law had got 3 picks (Peyton threw 4 in all) in one game against Peyton in the postseason. The teams Peyton lost to in the Post season where 3-4 defensive teams (easier to confuse QBs) like Pats, Steelers, and Chargers. Every year he lost to one of these teams in the post season except for the Saints in the Superbowl.
Coming into this year....Manning was 5-2 in the last 7 times out against New England, including the AFCCG in 06. (4-2 if you don't wanna count 08 since Brady was out)
He hasn't looked nearly as lost against New England recently. Knowing this, don't you think it's more plausible that New England just had the right players to be able to beat the Colts at the time? I mean they did win 3 SBs.
Steelers and Chargers had more to do with being able to get pressure(something you do with all QBs), not necessarily confusing him.