Nikon responds- "rapid deterioration in the market occurred and fiercer competition"

Find me a mirrorless that does high quality AF and subject tracking (like the D300 or D700 do) while shooting at max fps.  I can't find any.  Many mirrorless don't even AF at all after the first frame when shooting at max fps.  This is one part of the technology that is still vastly superior in higher-end dSLRs.  Probably won't stay true forever, but it is that way now.  If you can prefocus (like on a batter hitting a baseball), then maybe they would work, but if you need to track a moving soccer player, I don't think mirrorless is even close yet.  If you know of one, please let me know.

I've noticed the same thing.  If you ask what the best mirrorless cameras are, nobody talks about Nikon.  I'm comparing NEX and EM5 to buy something smaller light for backpacking.  Both have sensors at least as good as my D300.  Right now, it seems like D3200 and D5200 are under serious attack from the good mirrorless cameras.

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John
Gallery: http://jfriend.smugmug.com