I think there are other people, or "have been others" that had what Adam possess's.
Two that come to mind are Elvis Pressley and Michael Jackson.
Adam has a gift for sure when it comes to performing. He can sing like no other, but what really is interesting about Adam is his ability to capture an audience.
Adam has already proved during his Idol performances that he has that "star quality." Girls have removed their panties and bras, throwing them up on stage. You can hear it in the crowds screams, that Adam Lambert has the "gift."
I wrote a blog about him comparing him to the MJ and Elvis, here. https://hubpages.com/entertainment/Oh--God-You-Dev...