There is no English version, because that's Sony Japan's website.
That is not an PCDP-only list, click on through and you'll see everything from DVD players, Neige MD blanks, TVs to god-knows-what.
There are really no specs, because this is a list of all the product catalog pages.
These pages include things that are no longer in production (will tell you in Japanese on top left of each product page), are often not current information. They're often a completely different set from the product info you can access from the top page of the website.
*accent* otay? otay.
Now, so that you don't think I'm rude, here's the real, current table of Sony PCDP specs:http://www.walkman.sony.co.jp/prod/cd/kino.html
It doesn't really say anything we don't already know IMO, but if you want I'll translate it.