Canyon's geometry specifications for their Aeroad and Ultimate include Reach, Stack, Reach+ and Stack+. While the former 2 agree with all other bicycle manufacturers measurement methodology, Reach+ is defined by Canyon to be the horizontal distance from the bottom bracket to the centre of the handlebar tops (where your stem clamps to your bars). Stack+ is defined by Canyon to be the vertical height between the bottom bracket and the top of the handlebar tops. 

Now I have been looking at both the Aeroad and the Ultinate in a size L. Stack and reach are listed as 580mm and 401mm respectively. Canyon goes on to state that Stack+ and Reach+ are respectively 656mm and 490mm. Canyon claims their integrated stem/handlebar is effectively a 110mm stem. O.K. there's an angle involved, but wouldn't one expect Reach+ to be measuring more than 76mm greater than Reach?