That must be liberal math, looks oddly like how Obama comes up with the numbers he puts forth.
Anyways, I would say Zimmerman is fully responsible for the "blame" of following Martin, good thing for him it's irrelevant to the case. As I said so many times before, if following or observing Martin was all he intended to do and Martin attacked him, he's off scott free. If he tried to detain him or assaulted him, he's probably going down.
The SYG law is very clear. If Zimmerman had a RIGHT to be where he was and was attacked, the law protects him. Since it was a public area with a sidewalk, he absolutely had a RIGHT to be there, that's why they HAVE to prove he started the assault or he probably walks. The fact the prosecutor decided to prosecute even though they admit they don't know who started it only shows her disdain for the law, it doesn't change anything.