He is a lot smaller which is a great disadvantage but he's a superior striker and Jones would have to close in if he wanted to clinch and take anderson down. Don't think it's as clear cut as you make it seem.
at 36 y.o. spider would have no chance in a five-round, championship/main-event format. he'd keep it competitive in the 1st rd with some clean strikes and defensive skills, but bones’ relentless pressure and will would eventually get to him and he’d get ko’ed or submitted in the 2nd.