1up has a piece looking at the Wii vs. the PS3, running down the particulars on graphical power, online capabilities, launch titles, and control scheme. For the most part, they're siding with the PS3: "Traditionally, Nintendo's never been much for online gaming (the GameCube had two online games&ever), but Wii appears poised to finally bring Mario and Co. into the multiplayer arena. Wii will use a modified version of the DS' Wi-Fi Connection software to facilitate online matchmaking. (Most likely, you'll only be able to play against players who give you 'friend codes' first, just like with the DS.) Like the PS3, the Wii will offer online gaming free of charge."
Link To Original Article