Messiah, Guitar Hero: Superstar Rocks on at the Neil Simon Theatre
'Jesus Christ Superstar.' (Photo by Joan Marcus) Religion goes down so much more easily when it's accompanied by guitar. Innumerable youth-group leaders and Reform rabbis know this truth, and so does Jesus Christ Superstar, Andrew Lloyd Webber and Tim Rice's 1970 rock-opera passion play. But the nascent mega-musicalers' first Broadway outing"Superstar originated as a British concept album, and then debuted he…