I think that it does make a difference that the game is showing up on phones first. This is the kind of exposure (smart)phones need.
In my opinion, without the 'firsts,' anything released on a phone will be ignored.
Now, as far as MI:3 goes - who cares. I'm boycotting Tom Cruise from now on. He's a wack job and the next 'Michael Jackson' -- I'm going to be one of the first to jump from his sinking ship.
Now how about some real games for a Windows Smartphone like Dig Dug! Now he's a cool dude!