Are you thinking that perhaps he couldn't have done that riding the roads in Arizona in the winter in 75 degree temperatures?Nuttli went from a fat nobody to a TT pro champ riding a trainer.
The posting that CampyBob made and rapidly pulled down showed the "power output" of the group of riders to be 300 watts at 18 mph. Think about that. From memory there were five riders and they were drafting. That meant that they were only putting out max output for 20% of the time. And the numbers were 300 watts? That was totally distorted so that program doesn't give realistic numbers - and CampyBob was arguing that I couldn't be putting out 300 Watts at a steady 20-21 mph into a 20 mph headwind for 10k. Actually Steve Gribble's calculation program was 340 watts but since I did ride a little less than straight into the wind for maybe a total of 1 k of that I reduced it.
I haven't been saying I'm fast. I've been saying that I'm dropped on every climb so making these sorts of numbers can't be that off-the-wall. And CampyBob's Cat 2 friend reporting 250 watts at a heart rate of 150 backs that up as well. His racing heart rate would be probably 170-180 if he's under 30. I was impressed with that power for that heart rate and not because CampyBob thought that was his actual racing power. Max heart rate only extremely rarely changes as much as 0.1% between individuals of common age and fitness levels so despite people saying - "it varies between individuals" it doesn't. I worked on the first real Heart/Lung machine calculating the expansion factor of the aorta so I had to learn a little about this stuff.