I would doubt this number. Do not as k why but I have an actual power meter (Powertap) on my bike and being average Joe Schmoe I do about 150 Watts when doing s

I would doubt this number. Do not as k why but I have an actual power meter (Powertap) on my bike and being average Joe Schmoe I do about 150 Watts when doing semi leisure ride of 50 km (31 miles) on a flat. On such ride I pass some and many pass me. My best ever result on the same ride when I was going like mad all the way was 250W. I would assume that I am pretty average so 100-200W would be more likely number rather then 50W.