Those books are some sort of -in-depth war/mental strategy guides which dive even deeper compared to SC2.

In virtual games there's no army morale, or the need for sense of belongings. If you are interested in those books then read it, it might even help you in dealing with real life issues.

SC2 is just a game, but everything is just like real war where real time experiences are invaluable. Do don't just "talk about war strategy on paper" =D