I have a friend whose Zwift stats are a million miles away from his real world stats. I strongly suspect he has a poorly calibrated turbo or has fibbed about his weight.
I don't use zwift, but I see his rides on strava, which also shows a screenshot from his ride. I was looking at this screen shot and it shows the power he is putting out at that time in the top left hand corner. It also shows a table on the right hand side where he is positioned in the ride and his watts per kilo.
I was wondering if this w/kg number is an average for the ride so far, or what he is putting out at that moment of the screenshot? If the latter he has definitely lost 15kg of virtual weight lol.