Wear patterns seen on street bikes ridden by mere mortals is due to the rolling radius of the contact patch is not the same from left to right side.
By rolling radius I am referring to the shortest distance to axle from every point of contact with the road. It's different due to rounded tread used by motorcycles. Because it is different every point in the contact patch is moving at a different rate. Something has to slide.
Greater tire pressure will make the contact patch narrower resulting in a lesser speed difference for less scrubbing. The tire will also be stiffer so less flex which means the wear will be more even, less scalloping or feathering.