PS3 will sell ov. 10 million next year... that's not irrational.
PS4 is to be released in early 2014.
You think PS3 will be less than 15% down YOY? If so then yes that is irrational
This late in the generation exclusives push very little hardware pkus PS3 will have Wii U and the next Xbox to compete with in 2013. It will be significantly down