I only think Baez' closing is effective if the jury is willing to believe in massive conspiracy theories involving everyone from the Anthony family through LE and outside experts.
If the jury is willing to George Anthony keeps his duct tape locked away somewhere where he is the only one with access.
If the jury is willing to believe Roy Kronk is a money-grubbing media you know what who turned down the opportunity, not once, but twice, to go down and make a big dramatic press release to all the media that was right down the street.
If the jury is willing to believe a family not willing to call out their daughter for lying about her pregnancy is somehow so abusive towards her, even though there has been no evidence presented about ICA about having bruises or broken bones, either, that it's perfectly normal for her to go traipsing off to Blockbuster arm in arm with her bf just a few hours after seeing her own daughter's dead body.
I could go on and on, but that seems to be Baez' job.