High end is defined by the CPU's that Intel and AMD release. Intel's extreme edition processors are currently the best thing around, therefore they represent the high end of the market. I'm not claiming your pc isn't powerful but it is an objective fact that there is a selection of CPU's that perform better. I'll admit that I may have been better off using the term "enthusiast" instead of high end but the point remains that if your livelihood depends on your PC being as fast as possible then you would be wise to side with Intel for the time being.
Personally, I use an fx6100 in my system and that does me fine. I notice no sluggishness and everything works great but if I was a professional then I would be forced to go with Intel. As a consumer, this bothers me greatly because I want the two companies to be neck and neck which is why I dearly hope AMD gets this right.