I came across this power calculator on the web:

http://bikecalculator.com/wattsMetric.html

You input speed, incline, etc., and it calculators your power. I have no idea how accurate or what formulas they use are.

I was surprised though, when I plugged in 23mph (in km), on a nonincline, the estimates for power requirement is about 200watts on aerobars, 242 in the drops, and 300watts on the hoods.

That seems like an awful lot of watts as an advantage for aerobars. I don't have a powermeter, but for in my experience on aerobars versus drops, I would have guessed closer to 220-230 watts on aerobars, or a much smaller advantage. Is it really 100 watts of difference to ride on the hoods versus drops at 23 mph?

Does this calculator sound right? (Or wrong?)