Leisesturm,

After re measuring as you suggested I found that my Fuji Absolute 1.0 has a crank length of 175mm (as verified on the Fuji website for "Medium").
You are right; it would be very odd for a mass produced bike to come with a 180mm crank.
Also, after re measuring the Roubaix I found the true crank length to be 170mm, not 165 as I previously stated.
Thank you for kindly reminding me how important it is to measure accurately.

Sorry that my misinformation caused you to burn your time researching this issue in the morning.