You say "good fight" after the fight, not before. Different strokes for different folks. To be a fighter you need to be confident and cocky. Look at Sonnen, BJ Penn, Koscheck, and many others. Does Jones go to the lengths that some of the other trash talkers do? So far he hasn't even come close.
I will also tell you that many people are in Jon Jones ear. He has the chance of a lifetime to become one of the "company" men. He could be one of the faces of the UFC. My point is people like Koscheck mainly do what they do the SELL a fight. They are doing it for the company, and most people just don't realize it. Fighters being friendly and shaking hands don't sell fights, and they don't hype it. Most fighters know if their opponent respects them or not, they don't need to be friendly to validate that respect before a fight.
Some of the all time greats were trash talkers. Ali, and Jordan (to his opponents).
I honestly don't think Shogun has much of a chance. He likes to be aggressive and I don't think you can take that approach with Jon Jones. Shoguns wrestling is also not that great. Shogun wasn't considered "the best" until the Machida fight, and that win got him many bandwagon followers. Shogun is also coming off a injury and a long recovery. While Jones just fought last month, and took no damage. Jones was already in fighting shape, and with Greg Jackson coaching him I think its safe to say he didn't let Jones over train for this short notice fight. Shogun has a punchers chance, and he might get a submission while he's getting pounded on the ground due to the inexperience of Jones. But most likely he will get dominated the whole fight, he's just physically outmatched.
84 inches, it make a difference.