I would hope that the PS4 hits 20 million by years end. That would be a pretty neat thing for the whole industry.
THe one thing is, I don't think PS4 sales would detract from XB1's selling. So, if the PS4 sells that many, the XB1 will also do well. I have a feeling that both companies are going to make a number of great promotions to really push out the consoles.
It is near the end of the end....