Honestly, it may be possible but neither of those battles are easy to speak of (PS3xWii; PS4xGen).
Some points i thought of
1- CONCURRENT BATTLES
I think that those two things can hurt each other. People that acquire a new PS3 now, will wait some time until they buy their PS4, that will give MS some ground to build on.
or
PS4 sales will hurt PS3 legs against Wii. PS3 by the way is 110 mil behind in software sales, new PS3 owners are more likely to purchase used games, therefore i don't see softwares sales getting close.
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2- JAPAN
You guys are giving japan leadership too much credit. Home consoles are losing power there.
3DS with less than 3 years already outsould PS3+Xbox together. DS outsold PS3+x360+wii.
If Xbox can make a US leadership, that does compensates for not having japan.
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3-TOO EARLY
Xbox sold extremelly well too.
Games wise, rising can be boring, but knack is just a bad game.
In march we are going to see second son duel against the overhyped titanfall. While titanfall will be divided on 3 plataforms (PC, Xbox360, XONE), i just don't know how that will impact.
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Don't look to me that way, i want PS4 to win this.
