have you ever taken one apart?
i have seen the "cling" issue on synthetics on a tranny i took apart (honda 5-spd), literally drove it, and within 5 hours it was apart and laid out on cardboard, and virtually no oil, parts almost dry (mobil 1 10W30 synthetic), vs pulling a spare trans that was almost empty sitting for years, and oil was on everything, i just needed one part (shift fork from the donor trans with reg oil), and it completely soaked the cardboard for a week!!!
so I'm not really convinced, seeing that made me