Wow, you guys need to get some perspective.
Alot of people just don't want to shoot people in their video games
Alot of people don't want that much movie in their game
And expecting a game to get a 50% attach rate is asking way too much
Super Smash Bros Melee had a 1/3 attach rate
Halo 2 Had a 1/3 Attach Rate
Not even Wii Play has a 50% attach rate and it's a $10 game