Playstation 3 vs Xbox 360!?

I saw that the xbox 360 had a price drop on ebgames! But i have been looking foward, to Playstation 3. But i realized the ps3 and xbox 360 both have the same games, and i cant buy rated "M" games. So what to do.
Update: I have a wii, so dont mention me being a little kid im 14
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