AVG stands for average? I doubt Grisoft would agree with that.
When a program starts trying to be an everything program, it becomes bloatware. These programs typically become less & less effective at any one part the program tries to do. Norton & McAfee have become famous as in-effective bloatware. (Yes, I know many of you will disagree ... but please read on before killing me symbolically) Unfortunately, PC-cillin seems to be headed down this same path.
What many fail to understand is that the more such companies can claim there product is able to do for you, the more likely their sales and profit margin is to rise.
I do not know how long you have been around computers, programs, and security as your profile gives very little background ... but, you do not seem to know the terminology nor slang very well.
I do not mean the above as a put-down of you. So, stick around and learn a little more of what you speak of. No matter how good an anti-virus program is, none of them are prefect. They all will have some imperfection ... one will catch a virus that another may miss.
Remember this ... what one man can code and secure, another man can uncode and hack. It is only a matter of time.
My favorite anti-virus program has not even been mentioned in this set of posts. It all has to do with what works for you. If it's PC-cillin, then I am happy for you. If Norton or McAfee works best for someone else, then I am happy for them. The point is, that sooner or later, each will fail to protect someone's computer. It is only a matter of time.