First, Google didn't sneak into a closet at MIT and surreptitiously plug into their physical network. Second, Google has formerly coordinated with JSTOR to index its content. Third, Google doesn't bypass the paywall--it just links to freely available copies if they are available outside JSTOR.
So aside from the fact that it's completely different, you're right, it's exactly the same.
So aside from the fact that it's completely different, you're right, it's exactly the same.