What are certain games not released on the Wii?

Games like Batman: Arkham Asylum, Arkham City, Enslaved, etc I would mention more but I cant think of them at the moment. Is it Nintendo that declines these games or is it the game companies that don't belong to a certain game console company like Sony, Microsoft and Nintendo. Last time I checked there were plenty of Batman games on older Nintendo Consoles. What makes the Wii so different?What are certain games not released on the Wii?
Nintendo is seen as a console for younger players. That said, most darker or gorier games don't make it onto the console. Also, it can be that there was simply no way to integrate the Wii controllers into the gameplay of such games.
The reason you don't see games like Arkham Asylum and Enslaved on the Wii is because Nintendo has marketed their console to appeal to casual gamers. The majority of Wii owners don't want to play games like that, or don't have the skill level. I'm surprised that they have some of the games they do, like Monster Hunter 3 or RE4. On top of that, the Wii can't support the same graphics quality as the PS3 and 360, so most developers don't want to spend the extra time downgrading for the weaker console.What are certain games not released on the Wii?
The controls are much different on the Wii and the graphics are not as powerful on the Wii. For instance MW2 has many killstreaks and alot going on at once and the Wii's microprocessor would not be able to handle the sheer amount of happenings going on at once. Also companies don't enjoy dumbing down their games into a crappy graphic version for better controls.What are certain games not released on the Wii?
Bioshock, Assasin's Creed, Infamous,Halo, Madden, Nba 2k, fifa ,
assassins creed

medal of honour

fall out

spiderman

final fantasy

and etc