Nice but try it in low light and a different outcome might be seen. I think they are also overly optimistic. In my own testing em1 was not that great tracking with m43 lenses. I was using the 25 1.4 and 75 1.8 on the no longer used baby swing at home. A lot fewer hits than I would have liked.
The GH4 scored very well. I think that the overall comments about mirrorless AF were very, very positive.
