I now have real-world experience and so far as I could tell from a cursory check there was no difference between row 14 (purple seats, where I sat) and one of the last rows in the cabin where I had a quick sit-down on the way out the plane to check the legroom.

So (with the caveat that I didn't bring a measuring tape) it would appear that Aerolopa is incorrect. The legroom in row 14 is just barely enough to fit my legs if I sit fully upright, if two full inches were missing like it suggests I would *certainly* notice that because it would simply not fit.