True, EA hasn't been in the upper tier of 3rd party support on Wii, but they've put out some decent games.
Actually EA probably IS in the upper tier for Wii third party support. I can't think of any third party that has really impressed me with their Wii support so just by having a few decent games EA would be one of the best.
Dead Space: Extraction was not a poor product but it is a perfect example of what is wrong with most Wii third party support. No one wanted this game. We wanted the REAL Dead Space, not some spin-off. Now let's say the hardware difference is such that a conversion of the first game or Dead Space 2 would not work. They still could have made a Wii-exclusive Dead Space that had the same type of gameplay as the main series. THAT is the problem. We always get a non-essential spin-off that doesn't play anything like the main game and the gameplay is the whole reason we would be interested in the first place.
I remember when Resident Evil: Code Veronica came out for the Dreamcast (it was later ported to other systems but at the time was an exclusive). At that point Resident Evil was more of less a Playstation franchise. Capcom didn't give Sega some Resident Evil cart racer or anything like that. This was a REAL Resident Evil game with that style of gameplay. It was such that if you owned both a Playstation and a Dreamcast and were a fan of the series it would be an essential purchase for you. Dead Space: Extraction is not that type of game. Unless you are a supreme Dead Space nut it is unessential if you own another console. It exists for Wii-only owners to get some sort of Dead Space related product to that audience. It was not designed to be an essential Dead Space game that offers Dead Space style gameplay.
I would have been interested in a Dead Space Wii if it was a real Dead Space game. I don't care if the story is some unessential side-story, I just want the Dead Space gameplay. That's the whole point. Hey, the Genesis gets Contra: Hard Corps and it isn't a numbered Contra game and has different characters. Yeah, but it played like Contra so it counted. That's what the Wii should get.
EA can make the best spin-off in the world but they're still not giving us legitimate support. That is the problem. And it's not just EA who is doing it.