Prediction: The Xbox 720(?) will sell more than the PS4 and the Wii U combined

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It's the same thing for Microsoft they have Halo 4 and Gear of War who are mega seller sony has Gran Turismo and Uncharted

Microsoft has Forza and Fable who sold relatively well sony has LBP,God of War

And about risky game we can mention Heavy Rain and Alan Wake before the two game was released the majority expect Alan wake will outsell Heavy Rain but it was the oposite Heavy rain 2 time  more then Alan Wake.