I do not want to compare LWR and LWD, although LWR was far more superior.
The first chapters, when they are in Europe, are not interesting at all. One should actually start reading the book from the chapter where they arrive in Tunisia. Still, the writing style throughout the book is not really compelling.
Then the so call 'adventure' is a farce. Two support vehicles, one doctor, one ex-SAS... It really makes the African approach naive, and almost arrogant. But I think it's simply out of ignorance.
It's actually a pity for Ewan and Charley, because finding the life opportunity to cross the African continent on motorcycles is normally a great and unique adventure. But they've missed it totally for themselves and for their own memories to cherish.
So this book is not worth all the publicity.