It's sort of besides the poin, though, because I don't think being an above average bike handler translates perfectly onto Roubaix cobble skills. Nibali was a better bike handler than Pogacar, but still needed to follow Fuglsang (mtb) on these types of cobbles.
Generally speaking (and this is a generalisation) you need that XC/MTB background to be able to cope with specialists the first time you do this race (like Pidcock). Experience here matters, and I don't think Pogacar won't ever win Paris-Roubaix, I just think he doesn't have much of a chance first time round. All it takes is for Pogacar to lose the wheel round one corner on Mons en Pevele or the Carrefour and the elastic is broken and he loses.
Generally speaking (and this is a generalisation) you need that XC/MTB background to be able to cope with specialists the first time you do this race (like Pidcock). Experience here matters, and I don't think Pogacar won't ever win Paris-Roubaix, I just think he doesn't have much of a chance first time round. All it takes is for Pogacar to lose the wheel round one corner on Mons en Pevele or the Carrefour and the elastic is broken and he loses.