Originally Posted by
Hypno Toad
Look specifically at the Kona and how the average speed changes from the "total" to the "top 20%". Since this is the Kona is the work-horse bike and sees some tough conditions, removing the bad weather days makes the biggest difference in the statistics. This shows that the Kona is a faster bike than the total average speed would indicate, but it is still not a pure road bike.
IMHO it's interesting, but not much more than interesting.
Maybe the range between the bike's average and the bike's top tranche average is an indicator of the bike's performance. My reasoning is that your top speeds are likely near your maximum effort, and the average of all rides likely reflects some comfortable range of effort, regardless of the bike. So the difference of speeds between the average and top tranche would represent similar differences of effort, regardless of the bike. Greater increases of speed for similar increases of effort would mean that the bike performs better.