Settle down there, Sparky…don’t expect others to do the work to back up claims you make.
My point, had you decided not to get your back up against the wall, was pretty clear. You are assuming that someone on an aero bike has vertical forearms and someone on an endurance bike has parallel forearms. An aero bike does not have to equate to vertical forearms nor does an endurance bike have to equate to parallel.
Tailwinds.