Oh I wasn't meaning direct usefulness, but rather rigour of testing. To someone who hasn't built a huge storehouse of bokehs, the first page is meaningless because it does not afford the reader to identify precisely what are the characteristics of each lens. The other one (BTW, a link from the first one!) gives you a more useful experimental procedure, results, and conclusions. If you won't use the lens tested, you can at least learn more about bokeh and how to test for it.