PlayStation Move will offer limited four player support

[WereKitten]

^Indeed. Still, you can use 4 wands (or 4 DS3) at the same time.
The worst limitation is only 2 players with dual controllers each.
But, speaking practically, after four years of Wii games, how many of them allow more than 2 people, each using wiimote and nunchuk? I bet that's a very scarce number.