Mathematical model matches, since a mathimatical arbiter eliminating Head Of Line blocking also incurrs the additional latency penalty due to the extended path

Mathematical model matches, since a mathimatical arbiter eliminating Head Of Line blocking also incurrs the additional latency penalty due to the extended path and additional switching elements. However the latency penalty is incomparable to the improvement in latency variance. I can't believe they've ommited a situation where this one lonely customer answers "Yes, I DO want to hear more about the offer" and starts signing up for the store membership, a bonus program, a store credit card, a cat insurance, and a dunce hat.