Impossible............he's telling you porky pies.A humbucker, any humbucker, doesn't have that kind of power.Strat coils, yes cos the poles are actaully magnetic rod aimed directly at the string but with a Warpig the magnet is underneath the coils and the magnetism goes up through the pole screws.
If you've intonation problems it's coming from somewhere else....could even be a duff string.Crank the Warpig right up, you should be able to get within 3mm of the string quite comfortably.