I am not seeing that at all but the Q6600 is, I believe faster. Might need to break down to cost / speed.

Intel Core 2 Quad Q6600 Retail = $275

AMD Phenom 9500 Agena 2.2GHz Quad-Core 4X 512KB L2 Cache 2MB L3 Cache Socket AM2 95W Processor - Retail = $259.00