I unfortunately don't have a Wii myself, but I was visiting my younger brothers, who bought one. Unfortunately they haven't bought any games yet (cheapskates!), but it ships with "Wii sports" which is pretty funny.
Dunno if the browser is Opera, I wouldn't be very surprised if it is - but didn't look closer. Works sorta okay, although it doesn't support everything IE and FF does. You can watch youtube and play a few flash things though, so that's cool enough.
I don't know the specs of the console, but it's a good deal lower than PS3 and XBOX360 from what I gather. That doesn't really matter though, as long as it gets all the really cool and interesting niche games, that don't sell only on graphics