Looking at it realistically, the PS3 will probably continue to sell software for two to three years, primarily in small markets and in Japan. The 360, being heavily US-focused, is more or less dead now that Tomb Raider is out. So if we assume a similar drop next year, the PS3 sells 25m copies of software and gains another 5m on the 360's total. So it's gonna be tough but definitely possible.
Now, if we assume even more of a drop for the 360 next year due to lack of games and worldwide support, that changes matters entirely. If the 360 were to drop 60-70% YoY on software and the PS3 stays relatively close to 50% drop off, then we have a ballgame. The PS3 needs to get a good 10m jump next year for it to be possible in my eyes though; Japan isn't gonna stay with the PS3 much later than 2016, and the trickling of small market sales isn't going to be able to make up for a 15m deficit in 2017 and beyond.
You should check out my YouTube channel, The Golden Bolt! I review all types of video games, both classic and modern, and I also give short flyover reviews of the free games each month on PlayStation Plus to tell you if they're worth downloading. After all, the games may be free, but your time is valuable!
