Not quite the same, in this article pretty much all of the books are teaching Rails. The link you provided shows a different Java technology for each book. You only need one of the books to learn Rails.
Struts cookbook? Well thats not a requirement. There is the RoR cookbook. Add that to the pile.
IF you are making an xml-based external web service I don't care what language you still write the XSLT to give out as a public api. So thats another one to the ruby pile.
Struts in action? There are 2 learn struts books in that pile.
In any case if you think more than a few seconds about that image you will cut down the java side and incraese the ruby side to equalibrium.
