Yes, but presumably you looked at the apartment first.

Unless airline search sites start listing seat pitch, amenities, seat recline, in-flight entertainment quality, etc. next to the ticket price when selecting a fare, it's hard to see how these factors would play into a purchase decision.

Even if the data were there, I'm wagering that the lions share of customers would keep $20 in their pocket at the cost of some minor discomfort.

Yeah, apartments aren't a commodity (they're pretty much the farthest from, given their absolute uniqueness in terms of location). Plane seats are, unfortunately.