We are debating this one on the Falcons boards today as well. The general take is that the article is very well thought out and spot on in the analysis. The only break between here and over there is if the conclusion he made naturally come from that analysis.
I work with stats, so I let a little of that wander into my though process. His main point seemed to be that the Falcons are going to experience a regression to the mean in terms of the QB pressure percentages. Assuming the Falcons game stats are exhibiting normal process variation, it would be hard to argue with his conclusion. To have a 3rd straight data point 50% above the mean would be...unlikely. Therefore, they won't get any pressure on Brady and the Patriots will score at will.
On the QB Pressure % point, if you want to believe that, go ahead, the logic is sound. My problem is with the assumption that the Falcons QB Pressure % change in the post season is due to normal process variation. It could well be that the change is associated with an actual change to the Falcons defensive process. If that is the case, it could lead to a sustainable shift in the process mean. His article actually does reference at least one process change. The Falcons are blitzing more often. He goes on to say that while that is a fools game vs. Brady, they really have no choice but to continue with that. In other words, maintain the process change that began two games ago. On one hand he is saying that the process should regress to the mean (implying the mean of the 16 game regular season process). On the other hand, he's saying they will keep using the new process. In my opinion, that is where his conclusion breaks from his solid analysis. He sited a process change and then said he expected the mean to continue as if the process had not changed.
The truth is, none of us really know if the blitz percent is predictive of a higher QB pressure % or not. They are correlated, but their isn't nearly enough data to say their is a causal relationship. Ultimately I believe that his analysis is sound, but his conclusion is suspect. We will all find out together on Sunday.