It seemed to me that O.J.s defense team recognized that time was not on their side. The sooner they went to trial, the less prepared the prosecution would be.
The Zimmerman prosecution has a ludicrously weak case and will look even worse if they are forced to present it before having plenty of time to tighten things up. Sixty days is not a lot of time when one needs to coordinate the testimony of many experts and witnesses.
The prosecution will have to deal with the fact that very few of the professionals who were involved in the early investigation thought that Zimmerman had committed a crime.
Even if such a professional testifies that he now believes that Zimmerman is guilty, he will have to explain his earlier stance.