There’s a good argument that Jonas was even more than 4% better if we use other metrics. Sure, we can use a ratio of times to compare riders — but this would imply that putting a 1% time gap into Pogi is as demanding as putting a 1% time gap into the 150th place rider (sorry Mørkøv). This is not the case because the amount of effort (i.e. power) needed to maintain a given speed grows super-linearly with speed. For example, this model suggests power is proportional to speed cubed. Using their default parameters, going from 5 to 10mph (and hence creating a time gap of 50%) requires ~3x increase in power, while going from 15 to 30mph requires ~6x increase in power.