Originally Posted by
genejockey
Or just because speed is fun. I really don't get the whole "If you're not racing who cares how fast your bike is?" thing.
It needs some context though. I think in this particular case the difference in average speed between the proposed bikes is likely to be insignificant. It would be different if the OP was talking about an aero road race bike with a more aggressive fit. But 2 bikes of similar weight, aero and fit are going to give the same result.