albionus on 07 August 2007
A bit of caution I would add is that the PS2 didn't launch globally like the Wii so the Wii/PS2 comparison has the same problems as a Wii/PS3 one (that you noted). At the 8-9 month mark in the PS2's life it had just launched in NA and maybe Europe so the actual global numbers would be different than first 8 or 9 months everywhere.
