I read those articles, and while I don't have the magazine with me, I believe the Fountain was 13,000 lbs. and the OL was 10,000 lbs. They ran almost exactly the same top GPS speed (118 mph, I think)
2,150 HP / 13,000 lbs = 0.165 HP per pound to reach 118 mph
1,700 HP / 10,000 lbs = 0.17 HP per pound to reach 118 mph
Yeah, I know other factors come into play, and the weight is hull weight, but it still a benchmark of some sorts.