I did a brief test in MW2 all buttons seemed fine.

Enhance your gaming experience with this genuine Sony PlayStation 3 DualShock 3 wireless controller. It is compatible with the Sony PlayStation 3 console and comes in black color. This controller is made by Axis and has been thoroughly tested to ensure it works perfectly. The model number of this controller is CECHZC2U and it features six-axis connectivity for precise movements.

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