That to me seems low, but then again its a hub dyno, so I guess he expects less loss (no tyre traction loss to consider), and at least on that side its always going to be an under-estimate of power rather than over estimate. I think the likes of the Evo and Scoobie boys factor in about 22% being 4WD. Doesnt really matter either way, its what you put down to the floor that counts
shame that figure is always lower