I thought his closing very good. However, I would have expected him to object, "facts not in evidence," when JB said that the police/LE deliberately destroyed evidence. i.e., the drying of the garbage was not a deliberate attempt to destroy evidence IMO. My concern is, by JA not objecting, some on the jury may believe the accusation.
I also think he was wrong when he said CA would not have permitted ICA to abrogate her role as mother. I think CA would have been happy to assume the full role of "mother," IMO it was that Caylee was a pawn in their power struggle, and ICA wasn't about to loose the "game" and let CA have Caylee. I think this was a big factor in her decision to kill Caylee.