I'm not exactly blown away by the results here. Firstly, if you notice, a large portion of the results are directly from Nokia. That ultimately means the images are cherry-picked. Also, there isn't a very large subset of images to sift through for 808 stuff. Don't get me wrong - the image quality does seem very good for a camera phone, but it's a 41 megapixel image. If you check out the 5.5 megapixel crop of what looks like a temple, there's no sharpness to the image pretty much at all. This would be more beneficial if you could filter out the Nokia Official images (I'm sure there is a relatively easy way, but I don't really have time to try it out at the moment).
Granted, if you put in the model of other cameras, you get stuff that isn't top of the line, but that's (usually) because there's more of it, by people who aren't trying to show off the quality of their cameras and are instead trying to take pictures. There are good samples of any cameras you're interested in to be found, you sometimes just have to do a little digging.
In honesty, I have never been all that impressed with cameras on phones, but I'm pretty sure that's because I shoot DSLRs primarily. The best camera is the one you have in your hands. I'll reiterate and clarify what I said before. While the 808 provides 41 megapixel images that, from the point of view of being a camera phone are pretty good, they are simply what they are - camera phone photos. Any camera that is considered current or recent made by a major manufacturer (Canon/Nikon/Sony/Panasonic/Fuji/etc) will almost always provide better image quality.