GAsoline has a higher heating value than methanol fuel, so for every firing of the air fuel mix more heat is generated and hence more power can be released. in theory gasoline engines can be more poweful than glow engines.
Having a higher heating value doesn't always mean it will have more power, in fact often the opposite is true. Having a higher heating value will only mean that it will use less fuel for the same work performed. But power is the amount of work done in a unit of time. Because methanol can be run much richer an equal volume of fuel and air will produce more heat and power than the same volume of gas and air. Also methanol burns at a lower temperature (not the same thing as heat) so there is less stress on the engine. For sport drag racers prefer methanol engines, because the engine is more powerful, yet lasts longer than gas and especially nitro. Though the engine uses more fuel methanol is the cheapest form of racing fuel, other than pump gas which is a poor race fuel a serious racer will need much higher octane and will bring drums of 110 or so octane fuel.