I think thats pretty fair, I think though they way its written is very Cav like, in the sence where he does what's on his mind at the time and regrets it later on occasion, like the 'V' celebration.
Finished the book. Was good and a quick read, nothing i wanted to skip over and never lost interest. You can tell he is a massive personality but you can also appreciate why some people don't take to him. He is very attuned to his goals, so much so that you just know that if it's not his way it is the highway. I found it quite intriguing that he was found unworthy of a professional cyclist early in his career when he was tested. All cyclists go through these tests and are nearly all judged with these numbers in mind. Cav though had proved them wrong by simply winning, showing that his will to win and his tactical savvy in the sprint were 2nd to none - test him in a lab though and he will be nothing special. My only other lasting impression was that he is blatantly open to mood swings, he even suggests himself that he has suffered from depression. You can sense this in the way he remembers key moments. He is also very honest, even about his current team! Most people write these sort of things after they leave a team, lol.
As far as the actual writing of the book goes i would say you can tell it was written by a sportsman.

It's not bad it's just not great. As i mentioned earlier there are several points with which he repeats whilst telling, almost, the same story twice. This only really caused me to wonder if i had started off again on the wrong page. The other thing, and i see it all too often in biographies, is the amount of typing errors! You would think they would have the books checked over several times to make sure they are correct grammatically and for any typos.
All in all though i'd give the book a 7/10.
Next book i've picked up is Charly Wegelius. I also have Froomes but i just can't find the urge to read that just now. Not sure why i don't take to him.