All of these things indicate to us that we are looking at a dual GPU solution, probably one based on a full version of Polaris 10. The only other alternative was that the C99 variant is Vega 10 but there are some gaping holes in that theory that in my opinion put it at negligible probability: 1) Vega 10 by recent reports is too early in the development stage to have made it out to the FOC testing phase. In fact, if I were to offer some proof: the C99 board passed RRA certification on 8th April 2016 which was way before AMD celebrated the Vega 10 GPU development milestone! 2) The nomenclature indicates to a Polaris card.
If the 490 is a dual card, then Nvidia wins this round, by a mile. Then again, it's WCCF, so take it with a grain of salt.
God I hope this isn't true. I was hoping to get an AMD card this round.