In another room here in THINQon, a poster (forgive me for not showing the proper reference) defined 'charisma' as validating another's expectations ... that is, when someone behaves in a manner that meets our expectations, we say (s)he is charismatic; we follow. Our thinking, sadly, is frequently similarly developed ... we listen, mostly, to those who say what we already "know." Critical thinking/listening is in short supply. (I am new to THINQon, and perhaps that comment does not apply so much here!)
More to your comments - I think Tom Cruise is an excellent actor. If one looks past the obvious screens to such a view (what one thinks of him outside of his work itself), one can see his talent - how he conveys certain emotions, how he moves, his intensity. I generally see his movies for the fun or the action, but am frequently rewarded with a gem of a scene (going back to his small role in his first big film - "Taps") in which he just nails the scene and, for a moment, we stop seeing "TOM CRUISE" and we see only the character.