Yeah. 2-man doesn't work against mobile quarterbacks for the reason you point out.That 2M (man-to-man with two safeties?) sticks out like a sore thumb, I'm guessing Allen got chunks of rushing yards against those coverages?
Also wondering if there are confounding effects where more competent defenses are more likely to employ cover-1, since against the NFL baseline it seems to be more effective.
The other confounding factor (aside from good defenses playing more man coverage) is probably down and distance. You can play with the sliders on the site cited in the images if you want. I'd suggest something like 3rd and 4+ (3rd and 8+ also looks like a good break point) -- some obvious passing down maybe. You'll see the coverages used change in relative frequency.
You can also isolate by week and see exactly what coverages and how (un)successful they were in the Buf-NE game from a few weeks ago.
Here is the link so you don't need to type it.
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