That's absolutely correct. There are several problems here, some of those figures don't look right to me, they look like seatguru figures and there are well known problems with that source. Serbia is identical to BA (and has a very limited network), it changed last year. TK is fundamentally a 2 - 2 seat and they also run longhaul seats on shorthaul sectors. Pitch also made sense when there was essentially one or two airline seats in the sky but that changed many moons ago and the thickness difference between a legacy Alitalia or AF seat and (e.g.) BA means it's very difficult to see that Alitalia or AF has a better product. Finally with Hop! and EuroWings on one hand, BACF on the other, on any given route it's very easy to end up with apples and pears. LOT, BA, Hop! have good Embraer arrangements, AY do not. So all you can do is look at a particular route, do the research, and see perhaps very little choice. On LHR-ATH direct the material choices are BA, A3 and LCC.