Front Upper Control Arms...

BGTV8

The situation you describe puts more weight on the inside tyre which means it contributes more grip towards turning the car rather than the alternative which places more load on the outside tyre.

remember you get lateral weight transfer when rotating the car and the problem is how to "share" the effort across both front tyres.

I actually think that SPL have it "right" .......

As the car rolls onto the outside front tyre with weight transfer, the effect of the FUCA with increased lock puts more weight onto the inside tyre and so it is able to share more of the available grip rather than letting the outside tyre do "all the work".