I’m not so sure!!!
I did it on the TT bike, and made up a huge amount of time on the flat section. The climb only takes around 7mins 30s, I think the time is offset by the speed of the TT bike. I only got passed by one rider on the climb. He was doing 10+ w/kg on the Zwift carbon bike and unsurprisingly not registered on Zwiftpower.
I think the cones are set pretty low on this course. The guy just ahead of me got coned on the flat, at around 4km.
It’s a beautiful course. I’m really looking forward to see how the pro’s get on!