Yep, I was reading the one and same book last weekend after much anticipation - what a let down
It's a campaign guide of the 'old sort' - lots of big hand, small map type of descriptions but lacking in any interesting details, no human interest whatsoever and a tendency to making statements that seem to reflect the opinions of the time without foundation.
The analysis is unoriginal largely because, whilst well researched from archives in Austria and Hungary, it doesn't bring anything fresh to light on the Russian side. 80%+ of the material could already be gleaned from existing open sources. His understanding of the Austro-Hungarian Empire seems solid but the book displays a weakness when it comes to Imperial Russia and some of the translations of Russian units are just plain wrong.
Worth a look but don't take everything stated as read.