PS and PS2 sold over 100mil. PS3 has sold 50ish mil. Im willing to bet 90% of ps3 owners have previously owned a playstation console. When you continue chosing the same brand you become loyal to it. You are more interested in finding out as much as possible about it thus you browse the internet.
The original xbox sold around 25mil. The xbox 360 has sold over 50mil. A lot of the xbox fans just wanted the most powerful system, and so chose playstation 3 or pc this generation. Im willing to bet less than 30% of 360 owners have owned an original system. They are mostly new gamers, and former gamecube and especially playstation 2 owners. They aren't particular loyal to microsoft, it was just the most reasonable console choice at the time they purchased it.
The wii has no doubt had massive sales, but a very large portion of these are new gamers that have never gamed before. They won't be the ones surfing the web daily to find out more about their product. Core games that lack casual appeal are selling worse then their nintendo 64 counterparts and ever so slightly more than their gamecube counterparts. The core nintendo fanbase has grown slightly from last generation.
All of this information should be taken as fact as it is 100% true no matter how little sense it makes.
