What if D600 and A99 sensor aren't the same?
A while ago there was news story that Aptina was developing a new FF sensor for Nikon. What if D600 has Aptina sensor? I don't think Sony would sell FF sensors this cheap for D600 to be priced under $2000 (rumored to be $1500)
Another interesting tidbit: According to SAR, A99 is 24.3 Mpx
According to Nikonrumor, D600 is 24.7MP ...