So, you're claiming that Jesus couldn't play to a hostile crowd? So, the churches that send out missionaries to "heathens" who don't know God and practice "satanic forms of worship" are somehow better than God is at preparing their missionaries?
Wouldn't it be a better advocation of God's power and rightness if he sent his son (the one he needs to be executed and tortured) to people who didn't know him, and still have him convince a large enough portion of his power and rightness to create a major religion?
How does sending someone to a group of people who are predisposed to believe the types of things he's showing any sign of his power? Is a magician considered better if he can convince a group of kids who are predisposed to believe what they are shown and in magic in general, or if he goes to a group of other magicians who know other ways of doing the same trick, but are still impressed by his tricks?