When you compare the Phenom to Intel’s Core 2 product line, the parts pull up fairly equal in the mid-2GHz clock range. The Phenom is in no way a bad product, it just so happens that Intel’s Core 2 line simply scales better in terms of clocks and performance. In fact, the Phenom is a very good processor, it just simply is not the "best." There will be many Phenoms finding their way into enthusiast cases simply due to the fact that Phenoms can be found inexpensively, they have tremendously stable infrastructure behind them, and are showing to overclock very well. And AMD is letting us do it easily with the Black Edition Phenom.
Phenom 9500 (retail) = $200 ... q6600 (oem) = $260 ... in other words, phenom's cheaper
Real world situations (games, office applications etc) you're not going to notice any real difference between a 2.4GHz AMD quad and a 2.4GHz Intel quad.
Infrastructure (from my understanding) is referring to the platform (AM2/AM2+/AM3)
Check the screenshot of the AMD overdrive utility in the article, it shows the voltage. Read the thread attached to the bottom of the article, voltages are talked about by Kyle Bennett in there.
This article showed that the retail one matches the engineering samples (at least for clocks) and we've all seen the comparisons between the overclocked engineering samples vs. various core 2 chips.
Why are you comparing a 9500(2.2) to Intel 2.4? They are clock for clock close, but why not the 9700(2.4). Ohh right, it cost more. Where i live the Q6600 is still cheaper then the 9500(both retail)....Phenom 9500 (retail) = $200 ... q6600 (oem) = $260 ... in other words, phenom's cheaper.