Basically, if you are desperate need of someone else to provide common sense while you play this game then this book is for you. For the other 99% of the ppl who buy this game its totally redundant.
It really offers nothing in terms of strategy that anybody with basic gaming experience wouldn't already know.
The specs that it offers are already in the manuals and on the web, so no real value there. A large part of the book talks about each mech, but says little of importantance. Most of the information is already in the manual or in the game itself except for some minor editorials on recomended loadout changes.