It is not proof. If the results were reversed I would feel the same about any statement from martin...I would not take it as truth without what the law calls "neutral coroborrating evidence."
If you want to say that it is your opinion that martin attacked zimmerman then that's fine and it may well be so. But for all those who state that the undeniable truth is that martin stalked, circled around on, attacked, assaulted, jumped, etc zimmerman I say show proof.
The facts in this case point to a Neighborhood Watch Captain getting jumped by a gang banger punk.