I think this says more about you than about Google. By stating what they retain they've set themselves up for legal action by their users, if they deviant from those statements. If that's not good enough for you nothing would be.
Yeah, just like FB would never abuse the trust people put into them, or Microsoft has way too much incentive to lie to their users, so they would never do that either. /sarcasm
I could list a thousand companies who say one thing, and do another. I find it extremely naive to believe them at face value.
