AdSense transforming in non-contextual advertising program?

Since AdSense appeared on the market, it was known for every publisher that it’s one of the greatest contextual ad serving networks. They advertise on every possible way that “[...] Because the ads are related to what your users are looking for on your site, you’ll finally have a way to both monetize and enhance your content pages. [...]”

And that’s almost OK. They really serve ads which are related to the (website’s) content, but. There always has to be a but, right? What about learn even more about the users before serving those ads?
I explain: Devoracles.com has quite a lot of content related to Google, Google Chrome and AdSense. So it’s quite easy to predict that if possible, AdSense will show Google-related ads for the users cos those are also relevant to our content. And if you look at our ads, you’ll see that sometimes there are Google related ads. If you look at the right ads in the right time, you will see that there are Google Chrome ads, too. Like, “Download Google Chrome“, or something like that.

Now look at the image on the left. What’s wrong with the image? I’ll tell you what’s wrong with it! I see adverts which keeps telling me to download Google Chrome even though — ironically — I’m seeing the advert through Google Chrome.
That’s the feature of contextual advertising? Advertising Coke and iPhone for the biggest fans of these products? Come on, Google, this can’t be right!