This will be an epic fight, and both fighters know how to dig deep when they need to, but I have to go with Stipe on this one.
He's a true heavyweight who is elite literally everywhere (minus Jiu-jitsu, but his elite wrestling makes this negligible), and Jones has never fought at HW. Furthermore, Stipe has a special level of grit and determination that even Jones doesn't have, and Jones really hasn't looked dominant for quite a while now (clearly lost to Reyes, and looked less than stellar vs Santos and Smith).
I'd actually be confident in saying Stipe would TKO Jones if he comes in the same shape as he did against DC in their second fight, although there is always the possibility that he is slowing down now due to age.
I'll say Stipe by UD, and he'll further solidify the claim that he is the HW GOAT.