I think it's a real long shot , The PS2 came off the back of a hugely successful PS1 , and it steamrolled the competition.
Last gen split more evenly and although Wii U is experiencing sales closer to Nintendo's gen 6 level , the Xbone if I'm correct is tracking pretty good in comparison to the 360, so this seems to leave PS4 gaining market share at a great pace but more in line with Wii than PS2.
I have noticed quite a few people say it will go below Wii's pace in the next couple of years , but will have a more consistent back end to it's sale in comparison, to the Wii and it's sharp drop off.
This along with a more mature market and a sneaking suspicion we may have a shorter gen leads me to think it will end up some where around the Wii /PS1 in sales .
Research shows Video games help make you smarter, so why am I an idiot
