I dont think xbox 360 will have a lead of 6 million by the end of this year. GT5 will sell consoles im sure. And sony has to be dumb not to bundle it with consoles. I think 360 will end up having a lead of maybe 4.5-5.5 million by the end of this year. And 5 million difference is not much anyways. Lets face it 360 came out a year earlier so it is natural for it to be ahead throughout this gen. The wii is a special case because well it was cheaper and was the "cool" thing to buy.
oh wait im going off topic. Anyways it might be possible. Blu ray sales are increasing every year. The ps3 price is decreasing every 1-2 years. Ps3 so far has the best line up for 2011. I dont think the 360 will even come close to the number of quality games ps3 will have next year. All those games might actually sell a bunch of consoles. Imagine the PS3 going $200-$250 next year too! Either way people who don't own a ps3 will be missing out. Luckily i own both 360/ps3 :)