From physics point of view and how scientists consider something as proven you might be right. Also it will be good to wait until Dr. Kaku publishes his findings in more detail. However, there are still many areas outside physics where God was proved more than enough. Moreover, I assume that God doesn't want to be proven by some group, he wants to be found by every individual in first place.
RE: Well Known Scientist Michio Kaku Says He Found Definitive Proof that God Exists