Jones would handle him. He's got well over a foot in reach on Cormier. The only interesting part would be whether Jones can stop a take down or not and with the striking advantage going to Jones I don't see Cormier getting it.
Yea the foot reach would be tough. But thing is Jones has little KO power standing. So Cormier would walk through them to get a TD.
Can Cormier get Jones down? For sure I'll take the Olympian any day is that aspect. Cormier could take Barnett down any time he wanted.
The real question is could Cormier make 205 in a healthy manner? His kidneys had failed because of his lifetime weight cutting.