try looking at it from a different perspective. at it each rpm interval the engine is going to make a particular amount of horsepower, this is irrelevant of throttle position. for example, at say 6000 rpm, it is always going to be putting out the same amount of horsepower, whether the rpm's are going up (wide open throttle), going down (letting off throttle), or steady state (cruising or side-hilling). there are obvious exceptions to this when the fuel mixture, air density, or other input factors change. however, 6000 rpm will always be the same when the inputs are the same.What is really dumb is people thinking their sled pulls hard in the midrange
If a person is attempting to side-hill, they are not going wide open, they aren't going to be burping it either, they'll likely be running 6000-7000 rpm steady state feathering it as needed. In those instances, the more HP you have at the lower rpm, the easier the sled is going to be to control.