Might want to inform the FAA. If you fly a 172, they assume you fly 200 hours per year. If you complete your RV-8 and sell your 172, they assume you now fly only 29 hours per year.
One possible statistical cross-check is to take a random sample of airplane "For Sale" ads that contain total hours and year built. One could then compute average hours flown per year and by grouping the airplanes into factory vs experimental, one can see whether the FAA's assumptions are remotely reasonable.
Did they state what kind of statistical sampling or surveys they used to justify their flight hour numbers? Was the same methodogy used for all aircraft groups?