Maybe I didn't put that quite right - if a 'normal' auto had 10 kts on the nose when you got zero ground speed, you'd have a decent amount of cushioning power.
If there's some tailwind, somewhere in the latter part of the flare you'll have zero airspeed - if that's the time you're levelling and cushioning on, it'll be like doing a zero speeder in nil wind, so not so much spare collective for the cushion.
Going through that point and getting some negative airspeed might help you out from the cushioning point of view, I suppose, but the weathercocking effect would probably be a pain for directional control.