@Tom K. one thing is single descent on your home roads, other is descending through the season on roads you see for first time. Until now, he didn't really show much on descends and until now, he was never between faster riders in peloton on descends.
@martyg well you and me don't qualify as measurement how good some pro rider is on descends
With this analogy, we can say any of Simar Birkner brothers and sisters are best on world alpine skiers, as I'm sure they beat the hell out of anyone of us, yet on WC race, they are somewhere around 10sec back from top guys and girls.
I'm sure Kuss can smoke me on downhill on bike anytime he wants, with single hand, eyes closed and with malfunctioning brakes. But doing that to other protour riders is different thing.