It clearly states that Google will correlate your information on all services. Please take time to read my post again. Speaking of evidence: I believe it's your time to provide some if you want to dispute this, "the trend at Google" just won't cut it.
> for example, Google now prevents Google search terms for logged-in Google Accounts users from getting passed in the referrer for search traffic.
But if you buy Google Ads you still get that information. That speaks volumes.
There's simply no evidence that increased data sharing across Google involves linking Google Analytics data to individual personal accounts on Google+.
(If anything, the trend at Google is towards less integration between GA and Google Accounts; for example, Google now prevents Google search terms for logged-in Google Accounts users from getting passed in the referrer for search traffic.)