Its a mix of the better prep and skin stretching I reckon.

I dont do an ATG pass as it wrecks my face. In fact, the barber at Trumpers told me never to do one, as you massively increase the chance of ingrown hairs. To each their own however, and if ATG works for you then I see no problem with it. Its just I cant do it myself..!

I stop at the XTG pass; With proper skin stretching and good prep I can get a BBS shave that lasts all day!