Just a note that the A-Wing model's bubble cockpit is wider than the U-Wing model's cockpit. Recall, that in RotJ it looks like the pilots in those A-Wing scenes are pretty snug in there (certainly less spacious cockpits than the X-Wing and Y-Wing cockpit interior shots). As per Rogue One, the U-Wing is a dual-seater, where two pilots sit side-by-side while flying the craft (e.g. Cassian and K2 sitting side-by-side in the cockpit).
But I'm told that scale is 100% correct and that the movies happen to be wrong about the A-Wing, because: multiple models used in filming, matte painting backdrops don't count, the people making RotJ and Episode 8 got A-Wings wrong, and/or Rebels made the R-22 Spearhead A-Wing precursor appear to be ever so slightly larger than it had been.
A-Wing: tiny, fast, maneuverable single-seat dogfither with frail hull, light shielding, and light weaponry; maximum capacity of 1
U-Wing: troop transport with heavy armor and heavy shielding and serious weaponry; maximum capacity of at least 6
Yet their overall fuselage volume is roughly about the same, as per the FFG minis. Makes sense!
Reminders:
LFL Filming Model:
LFL Cockpit Views:
LFL Matte Painting Backdrop:
Even FFG's own A-Wing Art suggests the pilot fills most of that bubble cockpit:
PSA: A-Wing models should be about half the size the are now
PSA #2: I know the LFL Numbers are what FFG used. I'm not saying FFG got it wrong, I'm saying LFL got it wrong.
