Don't get mixed up on NCC vs CCC vs OCCC. All three are calculated differently.
UVW = Unladen Vehicle Weight
SCWR = 154 lbs x number of beds in coach
NCC = GVWR-UVW
CCC = GVWR - Water_weight - propane_weight - SCWR
OCCC = GVWR - (UVW + Propane_weight)
NCC will always be the largest of the three and OCCC will be close to it. CCC will be much lower, since it subtracts the weight of water, propane and the max number of passengers. It is not surpising the your CCC was was a low number whereas the NCC was higher.
2004 American Tradition; 2014 Buick LaCRosse
Homebase in the Ocala Nat'l Forest near Ocala, FL