Yea, the Fuga/M etc., is really a full size sedan. In fact same size as the discontinued Q sedan but this had more interior space. The MPG I get is definitely full size, not that great, but the handling of the car, even in OEM form, doesn't feel full size. If it were just me or my wife, I would've gone with a Z or Skyline coupe, but with two growing kids needed the room.
Also, the pics I provided don't give you the staggered view or the hulking look that rears look...the rears really look like 10.5 wheels on 275 rubber.