To start off, I want to congratulate you on finding that! I've seen it, ofcourse, but for someone to find that while doing research...some nice research skills there
HOWEVER, that guy is full of crap. Just reading his comments totally disproves his 'facts.' So now that we have that out of the way, the benchmarks that were posted on Anandtech and Hexus were indeed set up by Intel. When the websites got wind of the rumors, Anandtech ran the benchmarks again; this time, by themselves. They also explained all the reasons that they used an older chipset and all that stuff.
The results from Anandtech's revised benchmarks? Same, or better, performance.
But no one really uses the Anandtech benchmarks as the end-all comparison. Most people who actually know a grain's worth about Conroe visit XtremeSystems Forums. The members at XtremeSystems have obtained Conroe pre-release samples. Mainly, they overclock them (A Conroe was overclocked to 4.7Ghz yesterday), but some of them have compared them to other record-setting Athlon 64 processors. Thats where we get most of our information, from non-Intel, fully user-controlled benchmarks from the best overclockers on the planet.