Yeah, I'm not sure of the argument here. As far as Evolve is concerned, the general consensus from frequent flyers here, as well as my own opinion, is more important to me than technical measurements. It's a fact that pre-Evolve, the 700s had more legroom than they have now. For Bold Blue, the seat frames aren't changing; the only difference is a possibly slightly thicker bottom seat cushion. While I would like to hope that that is helpful, at least with comfort, I can't imagine it will make a huge difference to the perceived leg room.