CV90 combat vehicle stats seem to lack consistency.
Norwegian CV9030N was the same level as Swedish Strf9040A (not counting gun and turret differences). Later it was upgraded to CV9030FN1, to be equipped equally to the Finnish variant CV9030S.
"In September 2003, Land Systems Hagglunds received a contract from the Norwegian Army to upgrade 17 CV9030N vehicles to CV9030S configuration. The upgraded vehicles, called CV9030NF1, have an additional mine protection kit, new air-cooling system and rear view camera."
http://www.army-technology.com/projects/cv90/
It looks to me that the CV9030N was assumed to be Mk II whereas it in reality was Mk I and the subsequent upgrade to be made (incorrectly) to Mk III level. Therefore the level changes should be pushed back slightly to match other European countries' equipment. The good news: all the other countries (Finland, Sweden, Denmark, Netherlands, Switzerland) stand in line.
obat 29 - Norway
Modify
Unit 020 CV9030
Rename to: CV9030N
Steel armour: 10/6/4/10/8/4/2
HEAT armour: 10/10/4/10/8/4/2
Stabiliser: 1
Modify
Unit 397 CV9030(+)
Rename to: CV9030FN1
Steel armour: 12/6/4/12/8/4/2
HEAT armour: 12/10/4/12/8/4/2