I'm not as familiar with the e-commerce book you mention. It's not published by APress (not Wrox) so I'm not as sure what their style is. With the ASP.NET 2.0 Website Programming Problem Design Solution book, the focus is really on applying what you already know about ASP.NET using the MVP pattern to separate UI, BL, and DAL. If you go to the discussion forum for that book here:
I think you'll get a better feel for the level of user if you read some of the discussion there.
I think your OOP and Java background will help a lot but I think there may some ASP.NET constructs you're just expected to know with the problem design solution book and what you're really learning there is less about invididual pieces of code and more about putting it all together.
you might also head over to wrox.books24x7.com and sign up for a 7 day free trial and you can read as much of all of our books including ASP.NET 2.0 Website Programming Problem Design Solution and Professional ASP.NET 2.0 as you want. I think they obscrure they code during the trial but you'll get a feel for what's covered.
Wiley Technology Publishing
Wrox online library: http://wrox.books24x7.com