Rolf Prima Ralos 6 real weights

So I just weighed the Rolf Prima Ralos 6 wheelset that arrived today and compared them to the Mavic CrossRide Disc that come equipped on the  Blue XC2.

Measured on digital food scales. (Quite official if you ask my wife)

Ralos 6 Front - 692gr (minus skewer, rotor, tire, tube)

Mavic CrossRide Front - 908gr (minus skewer, rotor, tire, tube)

Ralos 6 Rear - 844gr (minus skewer, rotor, tube, tire, cassette)

Mavic CrossRide Rear - 1029gr  (minus skewer, rotor, tube, tire, cassette) 

Totals

Ralos 6 - 1536gr (1540gr advertised)

CrossRide Disc - 1937gr (1900gr advertised)? WTH?

Rolf Prima 401gr (.88lbs.) lighter