you can be both. I believe it is impossible to be in the business for so long and to have so much success and not be a bit of a diva. it is only human nature.
The trick about Mj's divaism, is in his vulnerabilty. people always wonder how Mj can be so soft spoken and fragile and yet when he gets on stage he is fierce and forceful, well, the vulnerabily, the tragic, helpless childlike man, is part of the diva in Mj. he is perfect at it, so that you wouldn't know he is doing it. But MJ gets what he wants, cause no one will say no to him. While other divas shout and scream, MJ just look like a baby tiger and vulnerable. grown men hold his unbrella or even carry him. Eddie murphy holds his trophy and not able to say no. he knows he will get his way.imo.