Are all carpet extractors considered equal?

My client is a school board and they have recently purchased a dry carpet extraction machine and cleaning product program, the machine is not CRI certified. The products used in the process are all green seal certified. The cleaning approach is quite different than the “deep restorative cleaning approach” and the carpets are easily dry within 24 hours. They have used this program with success in other schools. Is the dry extraction machine comparable to the traditional wet extraction carpet machine and therefore must meet the requirement of being CRI certified?