Prediction: PS4 to sell a minimum of around 70% of its lifetime sells in the first 2 to 3 years in the market.

[Touma]

Kaizar said:

The PS2 sold 150 million in the first 30 days. And the PS4 is currently selling on all the hype in the world. (people wanted me to explain why I believe what I said in the OP)

150M in the fisrt 30 days?

PS2 sold 50 millions after the sixth year