The computer is useless in these types of position. Same thing I try with the closed 6...Da5 Winawer lines or the main lines of 7...0-0. The positions where both Black and White are walled in from pawn chains it often gives White huge advantage even more than +1,00 for no reason. 

Which is why it is particularly good line to play against attacking players or those with take the engine reading as Bibel 

Given that Marin also has a 4...b6 databank, I disagree and think strong players would benefit. After all, Lenderman's game is in the Winawer section of this month's French update 

Personally I think that Black is fine in the 4...b6 line if he always avoids those lines where White try a Ab5+ and then can build an Adwance-like centre by using the Ruy López manoeuvre by bringing bishop back to a4, playing c3 and putting bishop back on c2.

In this month update in the Lenderman game, 5. a3 Af8 6. Ad3 Ad7 in the notes it given += at the end. But why not take on d4 before White can bolster centre with c3 ¿ I remember Marin recommended 6...Ad7 here in his databank.

Already from my replies #16 and #19 should be clear that have mixed feelings about this book.
Certainly it’s Lakdawala‘s usual entertaining and encouraging style explaining openings. He obviously has experience in the Winawer with b6/Qd7, as he gives  many of his own games (rapid & tournament). Good explanations of what black should play for, especially if white chooses noncritical lines. But the coverage of critical lines cannot satisfy: imo too thin and not deep enough!? Even not for ~1800 level!?

In addition to my concerns in reply #16 I noticed another hole?!
1.e4 e6 2.d4 d5 3.Bc3 Lb4 4.e5 Qd7 5.a3 Bxc3+ 6.bxc3 b6 7.Qg4 f5 8.Qg3 Ba6 9.Bxa6 Nxa6 10.Ne2 Lakdawala reaches this also after 4...b6 and ...Qd7 later. He doesn’t recommend a special move order and also analyzes ...Bb4-f8 after both 4...Qd7 and 4...b6, but according to the Index of variations the position after 10.Ne2 is his main line within his repertoire. Though it is covered in only 1 of 18 main games on this system!? Well, now (page 107) he calls 10...Kf7 and 10...Nb8 11.Nf4 Kf7 „virtually interchangeable“.
In CBM 152 (2013) GM Kritz gives a white repertoire against this line and has 10...Nb8? 11.c4! dxc4 12.d5!! with a strong white attack, based on Grishuk-Dizdar Mainz 2006 (1:0, 27). A later game was won by black, then another by white, finally most black players seem to have shifted away from 10...Nb8?! My Engines strongly prefers White ( +1,2 +/-), maybe they err in these positions. I don’t know [anyone here?] if Grishuk‘s 11.c4 can be neutralized, but for sure black should know about the existence of this move ... 

Nevertheless Lakdawala‘s book may be useful for someone intending to play this Petrosian Winawer. It’s just that he shouldn’t rely solely on this source but use it only as introduction!?
Anyway, from me not more than 2-3 stars out of 5.

tracke

Unless I missing something, I do not see Shaw's book in the bibliographie. 

Antiç and Maksimoviç book The Modern French is there though.

I have used hes Petroff book in 5 correspondence chess thematical Petroff events att ICCF (4 normal + 1 final) and found no obious misses in critical lines. However I lost a Caro Kann Panov attack game in an other thematical event where I followed hes Caro Kann book where he missed a simple improvment over some over the boar game where both had 2600+  ,and I forgot to double check move ,where white won by force. 

Depends on what you expect. I like his book on the Veresov - a not so serious book on a not so serious opening.