These guys give a pretty technical summary of the Rocha and Jones fights. I could not see the hand placement of Jones' guillotine so this video is really appreciated.
Also, Rocha is the man to watch out for. He lost based on those takedowns and the end of rounds 2 and 3. His opponent would only shoot in when he know there was not enough time to mount an effective grappling offense. All of Rocha's fights before this one was won via first round submission.
And Jon Jones has arms built for D'arces. Props to Bader for lasting as long as he did. We might have a new champ @ 205 during UFC 128.