[protheus]

Maybe you're mixing culture, as in traditions, customs and other parts relative to it and culture, as in societies "life style", interrelations and the technological evoluted state at a moment in time.

The first form, you can't have a basis for a logical (not subjective) comparison and it isn't a measurable amount in facts/things or anything else.
(example: if in a part of the world its usual that the bride wears white, and in other parts black, means one of them is less or more evolved?)
Only the second form, at which you have a basis of measurement -relating everything to today's forms of culture - can be considered in logical more or less quantities.
(example, technologically and human comfort status side, the Romans where more evolved in that time age, but less evolved relative to todays standards)