Rob uses quan's Thanos/Russell/Voldemort dildo to rape him to near death. Mods arrive to stop the massacre but are too late. As ever, a severely bleeding and violated quan proclaims victory before losing the last bit of his consciousness and being rolled off to the nearest dispensary.
Rob gets banned from the forum for five years, with high likelihoods of early parole. Quan gets banned from his virginity permanently.
In the end no matter whichever of them wins, Duncan_MacLeod definitely loses.