Is it possible it's just a matter of wind resistance? The 950A is a bit of a barn aerodynamically.
IIRC the highest speed I've heard of for the Adv was 130mph-ish - which is only a touch above 200kmh. (and that was no wind, on a salt flat, no screen and no seat so the rider could get lower...)
Wind resistance is a function of the square of velocity (if my memory of physics serves me...)