I'd say that mine is more internally consistent -- all the notation is consistent across all equations and figures. I have made 275 new figures, whereas he has curated existing figures from papers. Mine is more in depth on the topics that it covers (only deep learning), but his has much greater breadth. His is more of a reference work, whereas mine is intended mainly for people learning this for the first time.
Full credit to Kevin Murphy -- writing book is much more work than people think, and so completing that monster is quite an achievement.

Thanks for tip about Hacker News -- that's a good idea.