My Audi has the same size tire front and rear, doesn’t have tons of negative camber and is basically a FWD car with AWD added yet it requires a higher rear pressure loaded and unloaded. In the US.
In the UK, the very same car with the same tires (tyres) specs a higher FRONT pressure than rear.
Audi is building in more understeer into the car with tire pressure for the American market. It is a cheaper fix than tooling a smaller rear anti-roll bar.