I guess the easiest test is to judge the list itself, and in my opinion money grab aside, the list fails on its own merits.
If you think about C# it has 3 good stories, its concurrency, Linq and the .net framework. This list doesn't even try to hit these areas. Instead it goes after tiered cliches like re-factoring and design patterns.
Has anyone read a re-factoring or design patterns book and got anything out of it? I've tried, heck I own a few of the books listed here and I wouldn't recommend it.
Its missing something on concurrency http://shop.oreilly.com/product/0636920030171.do
Jon Skeet's excellent book on C# http://www.amazon.ca/C-Depth-Jon-Skeet/dp/161729134X
The CLR via C# http://www.amazon.ca/CLR-via-C-4th-Edition/dp/0735667454
Linq in action http://www.amazon.com/LINQ-Action-Fabrice-Marguerie/dp/19339...
This book can be a good start: > https://www.amazon.com/CLR-via-4th-Developer-Reference/dp/07...
Anyway, if you have specific needs, the knowledge needed may vary. For LOB applications (IMHO) very often performance issue have to be searched in I/O (RDMS / WebServices / RPC), these times in all depends a lot on query tuning, optimization of data transfer via specific binary protocols etc... so C# internals not come to an help (even if i think that knowing it may be really precious).
If you are facing applications with numerical analysis and/or greedy algorithm you could give a look at stackalloc/unsafe programming. This links is a good start:
http://content.atalasoft.com/h/i/58208059-improving-performa...
Hope this helps :)