Well, ### and ### that time limit anyway.
Follow-up thought arising from unrelated discussion in unrelated forum: Does anyone doubt that google can distinguish between pages made using WordPress, Joomla, Drupal, etc etc, and hand-crafted HTML? It's right there in the page source, isn't it? Possibly even in the visible text.
I can see false negatives: pages auto-marked <lang = "en"> when in fact their language is something else. But do you also get <lang = "something else"> when the language is really English? Never mind regions: just the initial 2- or 3-digit language code.