First, thank you so much for the compliment.
You're right, the "Which anti-virus is the best" topics at Seven Forums are indeed ubiquitous -- to the point of being viral at times. Some of the posts appear to be the OP's need for reassurance that they are protected. Others are more along the lines of pushing their personal favorite. (I'm sure you've noticed the repeated reference by some long-time members of their particular favorites.)
One reason I try not to "pass judgement" on another person's choice of A/V and other security software is that it is their computer, their investment. Unless I am aware of something questionable about the program of choice, if it is working for them, it isn't my place to try to get them to change. In fact, it irritates me no end when I see someone with a paid (licensed) A/V installed and someone comes along recommending that they replace it with something else -- generally their particular favorite.
Certainly, we have both seen in the BSOD topics at Seven Forums and Tech Support Forum that there are instances where the A/V being used can be pointed to as the cause of the BSODs and replacement by MSE solves the problem. That isn't to say that using a different A/V would also solve the problem -- which is most likely due to some conflict with other program(s) installed on the computer. Otherwise, the problem would be universal.
There are products I no longer recommend when asked, which has reduced the free options that I recommend when asked to MSE and Avast (see Products with Ask Toolbar - Calendar Of Updates
If you spend time in various security forums other than here, of course, (i.e., Bleeping Computer, Geeks to Go, What the Tech, Malware Removal) you'll note that some analysts post a standard "closing speech", while others will tailor it to the security software that the person is already using, which is my preference.
Do I have favorites? You bet, and I have frequently indicated that MSE is my favorite free A/V and that ESET is my favorite licensed program. It isn't a matter of the products being essentially the same, although of course there is an overlap in definitions because each vendor will attempt to get the latest threats into detection as quickly as possible. Some products seem to be targeted more toward Enterprise customers than consumers. Others have a more complex interface.
Another point is that those of us who have been around the security arena longer well remember the days of product wars. In particular, that applies to the "LandzDown Team".
Bottom line, no, it has nothing to do with any training in using specialized tools or some kind of insider knowledge. Rather, it is (or should be) both helping getting the computer cleaned and, just as important, providing information for keeping it that way.
BTW, from your replies at Seven Forums, Golden, I know that you have already picked up on the fact that having an up-to-date A/V and software/hardware firewall are not sufficient to protect your computer. You've also learned the importance of updating third-party software such as Java and Adobe products as well as safe surfing and the dangers of P2P programs and your recognition of issues seems to be increasing all the time. Have you considered malware removal training?
P.S. I just discovered the links to the topics at Seven Forums. I guess I'd better head over that way and see if they're under control yet. I seriously dislike "pile-on" threads where several people have already recommended multiple suggested fixes and, unless they've totally missed something key, I tend to avoid responding there. I've learned that unless the OP returns saying nothing worked, its better staying away from the free-for-all situations.