I always think of MJ as looking smaller than he weighs, while obviously Tibau is the opposite. It's a bad matchup for MJ, weak TDD while Tibau's game is powerful TDs and top control.
That said, MJ looked like a beast in his last fight, fighting like he had a chip on his shoulder. He even pushed the ref. I think he should have gotten another easier fight to see if he could do it again. I hope he brings the attitude again and KOs Tibau.