ARP Main bearing studs

Does Doug say somewhere "WHY" main studs are needed on a slant 6? Or maybe a better question would be at "WHAT" point? I'm just curious as to "WHERE" on the performance scale anyone would think they are needed. @Charrlie_S for instance has run some stout numbers with nitrous involved and "I don't know" if he's ever used studs or not? Certainly, they will make the bottom end stronger, no doubt.