No, not that at all. I'm saying there are different brand choices. Some look like they have good specs but they are terrible (I have never had a good HP and I've gone through a few of them), others have better ones. I had a Sony Vaio few years ago and it was a great machine.
There are different options, and I would be wary of the super cheap ones unless your only use is basic stuff. From the high-end perspective, you can get a Windows based machine with good specs but awful reliability and customer service so it may not be worth the discount. On the other hand, you can get a Windows machine with great specs that will serve you very well. The issue is that it takes some time to sort out all of the different brands to see which one that is. With a Mac OS, you only have one brand to think about with verifiable ease of use and longevity. However, it is just one good option among others. It always comes down to the freedom of choice, which is why there is no conclusive answer to this incredibly tired argument.
The PC domination really has nothing to do with excellence. It is the result of business decisions made by Gates and Jobs early in the process. You can argue the open vs. closed model forever, but the reality is that it is up to the consumer to decide where they would like to spend their money and what they value the most. It’s the same advice we give people when they are looking for a new bike to purchase. Go play with it, see which one fits the best and get it. Then enjoy the purchase!