The issue is not whether the average homeschooler is better or worse. The issue is the difficulties involved in ensuring homeschooling does not fail children. I was hoping the parallel between that and my later points about unlicensed doctors practicing over the internet would be somewhat evident.
My post didn't actually say that the average homeschooling education is worse for children than a public school, but I do happen to believe that it is :) This is, however, not based on scientifically-gathered data, so I would welcome data to the contrary.