Agreed, this should definitely be more than 5 seconds faster than the Enzo given that the 458 was already faster than the Enzo with a measly 562 bhp.
However, seconds on a track are hard to pick up, I wouldn't say that the tires alone are worth 3 seconds unless the Enzo was on street tires and the OoLaLa was on racing slicks. Given Ferrari's history with cheating on road tests, I'm sure they put ALL of their test cars on slicks for their Fiorano times, or at least semi-slick cheater tires akin to Pagani's recent debacle with the Huayra.
Regardless, I mostly agree with your comment about power. The way I see it, about 250-300 wheel torque per axle is the most you can possibly put down on a road tire without some creative wizardry (ahem, GTR) or high speed downforce. I'm very interested to see how both this and the P1 respond to massive throttle input at low speed. :lol: