On top you can watch the A7rII review video from Dave Dugdale. He is a known GH4 user and loves the A7rII features (with a few missing exceptions).
Photographyblog posted the full A7rIi review and concludes:
The Sony A7R II certainly succeeds in its attempt to turn the heads of DSLR owners. It won’t satisfy the needs of professional sports shooters, the menu system isn’t as refined as the competition, and some people will still put their trust (however blindly) in a more conventional DSLR, but the A7R II is a undoubtedly a break-through camera for Sony, both in terms of the promises that it makes, and the realisation of those promises…
Luminous Landscape tells you what long lens suits best for the A7rII.
The French site Focus Numerique compared the A7rII against the Canon 5DsR. And the A7rII is the winner with the Canon 5Dsr beating the A7rII only when it comes to sports photography.
Alexandre: “I shot beautiful pictures in Thailand with my new Sony A7RII and 3 different lenses, you can share if you like them: http://traveljournalist.com/sony-a7rii-thailand-stars-models-landscapes-beach-resorts-skyscrapers/”
A7r2 – A7r – D810 – 5Ds – 5Dm3 Sharpness / dynamic range / noise comparison by Tweakers.net
Sharpness – http://tweakers.net/reviews/4150/6/zin-en-onzin-van-veel-megapixels-vergelijking-scherpte.html
Noise – http://tweakers.net/reviews/4150/8/zin-en-onzin-van-veel-megapixels-vergelijking-ruis.html
DR – http://tweakers.net/reviews/4150/7/zin-en-onzin-van-veel-megapixels-vergelijking-dynamisch-bereik.html