My guess is the margins on GH and Rockband are probably bigger.
And yes the space for Wii is now bigger than the one for PS3 and 360 ( but those got increased slightly too).
The biggest advantage the Wii has though is that PS3 and 360 games are behind a glass and you need a Best Buy employee to access them ( and they are very hard to see due to poor lighting). You can however pick yourself any Wii games.
The exception are new releases which are on display at the end of the rows for every console and that you can pick yourself...








