It doesn't matter!
The portion of PS2 gamers that played games like Guitar hero and Babiez type games were many on the Wii. We know that by virtue of the games that were bought on the PS2, many were for non-gamers...
Even if the PS2 owners logged a heavy amount of playtime, it's unknown which fragment of the immense 150M gaming population played that time, and which played casually.
I'm not ignoring anything you are misusing facts to fit an eschewed view.
No. I am not misusing facts. The Wii was a paper weight where most people enjoyed Wii Sports and then threw it away. Even during the years of its high sales it still recorded lower usage than consoles who sold half of what it sold or in other cases wayyyyyyyyyyyyyyyy less. As I said before, gamers seemed to have recieved more usage from the Gamecube. That is sad. Even Guitar Hero demanded more skill and had tournaments compared to a lot of the casual games on the Wii.
The PS2 had a stronger library from a more diverse group of developers who werent looking at the console as a quick cash grab. This is why you see so many cash grab games on the Wii in the first place. The intent wasnt exactly there to build a library off of quality because non-gamers and little kids wouldnt know the difference.