They are saying it's 50/50 in the US which is just bullshit. NPD can prove it. They are simply being politically correct, that's all.
EDIT: here's the data:
Top 10 Games of Calendar Year 2008
1. Wii Play w/ remote - Wii – Nintendo – 5.28 million
2. Mario Kart Wii w/ wheel – Wii – Nintendo – 5.00 million
3. Wii Fit w/ balance board – Wii – Nintendo – 4.53 million
4. Super Smash Bros. Brawl - Wii – Nintendo – 4.17 million
5. Grand Theft Auto IV - Xbox 360 – Take-Two – 3.29 million*
6. Call of Duty: World at War - Xbox 360 – Activision – 2.75 million*
7. Gears of War 2 - Xbox 360 – Microsoft – 2.31 million*
8. Grand Theft Auto IV - PS3 – Take-Two – 1.89 million*
9. Madden NFL '09 - Xbox 360 – Electronic Arts – 1.87 million*
10. Mario Kart - DS – Nintendo – 1.65 million
Currently playing on PS3: God of War III
Currently playing on Xbox360: Final Fantasy XIII
Currently playing on NDS: Chrono Trigger