I say don't pay any attention to the 2 star review - this Julia Donaldson book is wonderful, just as all her others are, although I would agree it is perhaps different from them. My daughter is only just over two and loves it - demands 'TROLL BOOK' all the time (now the 'ladybird heard' obsession is waning for the moment). I only have it as a library book, but imagine I'll be buying it as soon as we need to return it - this keeps happening and makes those library trips more expensive than you would imagine.
I initially thought this book would be too sophisticated for her age, but actually she copes fine with the two intertwining narratives. Similarly, I was initially surprised it didn't rhyme, but it flows beautifully and has all the delight in language that you would expect from a Julia Donaldson - my daughter was repeating 'trippin trappin over MY bridge!' after just one read, and practising to say 'i'm not a goat, i'm a spider'. A few reads in and she is loving the pirates names, I heard her chanting 'percy patch' and 'peg polkadot' over the baby monitor last night when she should have been sleeping! I don't think it matters that the subleties of the plot are probably going over her head for the moment - as far as I'm concerned this means she will develop her understanding of the story as she grows, ie it will offer something to her for longer than a simpler book, and that makes it good value for money.
As long as the child is enjoying the book, why would you not want a few more 'challenging' reads in your repetoire along with the simpler ones? Surely thats how children learn and move on?!
I also really enjoy the illustrations in this book. It has a slightly dark edge to it, but that somehow still manages to be ultimately not scary, so its thrilling without being threatening in any disturbing way - children really enjoy that! It links it to history of traditional stories and fairy tales, and allows a way of sorting and coping with fears that wee ones can begin to imagine around that age. Great fun!
ps Also very happy this book seems to be helping my daughter to develop an interest in pirates. Its nice to have a few things balancing out all the super-girly stuff. And the Amy Winehouse-esque Peg IS pretty cool!