I was wondering the same thing, I have no idea what I am talking about, but from my little understanding of cycling. XCO is a short hard effort with respite from the downhills 1h30 max effort. On a real mountain stage that could be the total time ascending. If you look at the Olympic games where Pidcock attacked on the final lap and how he completely rode Alan off his wheel on such a short climb, just imagine what will happen to him against a guy like Roglic/Tadej on a 10km climb as Pidcock can't even hold their wheel, not to mentioned the 3/4hours on the bike per day for 21 days.
There is a reason why so few riders find success in both disciplines.
So what does Hatherley's numbers look like compared to let's say a guy like Roglic?
