ATM PS3 is dominating (I've had both consoles)
Considering the Wii has over double the COMBINED sales of the 360 and PS3, no, the Wii is dominating.
The Wii would be the superior choice IF its hardware wasn't so far behind the times, then again, that's how Nintendo makes their consoles so affordable in the first place. Still, it really irks me that a lot of the great games that come out on other consoles will never see light on the Wii because of its terrible hardware.