There is zero evidence to support any of that.
The last numbers announced were 20M sales for D3, and another 10M sales for RoS, combined for a total of 30M sales. There is no additional data beyond that, and "players" does not translate to "sales" as "players" includes those who played the free trial but did not purchase the game.
Publishers are very specific with these numbers. If the game had sold 65M copies, they'd very much say so as that would make it one of the most sold games ever.