Thanks for playing! ;-)
Vischer is right that their is a difference between Christian behavior and being a Christian. Moral directives apart from the new birth is a recipe for either frustration or hypocrisy. His point is valid.
However, VT did point a generation to a moral compass that was biblical in orientation when the rest of the culture had abandoned the Bible for post modern subjectivity or pragmatism.
VT was always a good tool for Christian parents to use to point to moral behavior while explaining that the power to Change comes from regeneration and daily trust.
A good friend of mine worked at VT for many years and became their senior design person. His wife answered fan mail for the VT characters. I am sure they both would agree that the VT moral lessons apart from the new birth was not Christianity. However, I think they would also say that the morals of VT was a light to a darkening of our moral culture and also a useful tool in the hands of believing parents and Christian workers.