Styles make fights.
We said that over and over before ANderson/Weidman and yet Anderson fans kept telling everyone he stood zero chance and had no business even being in the cage with him.
And Jones has about one of the worst possible style for Anderson.
If you watch every Anderson fight versus a wrestling based grappler (Lutter, Sonnen1 and Sonnen 2, Hendo and Weidman) Anderson has never been able to do anything to any of them in the first round and he ends up on his back for almost the entire round.
His key to later success with everyone prior to Weidman was his ability to avoid damage when on his back primarily by using his length to keep guys in low guard so he could avoid damage and survive the round until the bell got him back up, giving him another chance the next round.
In my view that is about the worst possible position to be in with Jones. He is longer then Anderson and likely could deliver his elbows easily from within his guard.
Chael landed something like 300 shots on Anderson from his guard. I absolutely do think Jones would likely finish Anderson in round 1, if he focused on it. He might try and play around though and prove he could strike with Anderson, thus prolonging the fight.