It might have something to do with the fact he got his ass kicked standing against the first guy his size, and also had his supposedly godlike wrestling and ground game completely neutralized. Gus also showed himself physically stronger than Jones, even while allegedly gassed/hurt, effortlessly standing up from a Jones TD in about 5 seconds in round 5 and stuffing Jones twice after the spinning elbow in round 4.
Jones would get trashed by guys like Cain, JDS, Barnett, Werdum, DC, and Overeem. He would likely not even be a top 5 at HW in the UFC.
He'll continue to campaign at 205 as long as possible, all while hoping Gus dies in a skiing accident in Sweden in the meantime.