I don't know what Pascal's Wagner is, but I couldn't disagree more with the statement I bolded. Christian children are taught from a young age that if they do not follow God (and all that implies) they will suffer eternal d--nation. I would say that's a pretty strong motivation to believe. If Hell were taken out of Christian teachings altogether, I wonder how many more people would stop believing when they got older. My guess is Christianity would be viewed almost universally as just another myth.
Christian children are taught the Bible stories as well. Your claim is speculative and for the purpose of this thread, really beside the point. For whatever reason, the Christian adult believes Christianity is true.
If the adult believes it on the basis of Pascal's wager (the threat of hell is close enough to what it is for our purposes), he still wants his child to be Christrian out of concern for the child rather than out of a sense that Christians are superior.
As for me, I believe Christianity is true because of the evidence. So I would not be a "victim of Pascal's wager" as Stathei put it even though my motivation for wanting my child to be a Christian would be based on the eternal consequences. The critical distinction being basis for belief vs motivation to help others see the light. My basis for belief is the evidence, but my motivation for wanting my child to believe are the eternal consequences.
Perhaps an analogy will clarify. Suppose my child likes to drink a particular advertised "health" drink, but my research confirms that drink's advertised benefits are nonexistent, though the drink itself is not harmful. I may figure, if it makes my child feel better to drink it, no big deal, even though my child believes the drink will have these good nonexistent health consequences.
But suppose my research reveals that the drink is actually a slow poison. Then my child's wrong view about it's good health effects would concern me.