I predict some people will post a rage reply to the thread title without reading about how noob I am to try to analyze the balance numerically. Yes, I am aware WG couldn't give a shit, but I'm trying to distract myself from a mild case of I think hay fever right now, so I would like to see what you guys think of this analysis form a perspective that is NOT purple enough to say "there are few OP or UP tanks, usually only OP or UP players". I believe that you can balance tanks without making them all the same.
If you are still reading, the statistics below are from Noobmeter's "recent" stats