Can a PS2 handle all the games that are / can be developed on a Wii?

[libellule]

it depends if the game is primarly made on PS2 or on the Wii.
Wii ==> PS2 port is harder to do since the Wii is more powerfull than the PS2
But u can also made a Wii==>PS2 port by adapting the GFX to the PS2.
I suppose it is not so difficult.