I am giving him credit for having the most charisma, playing the part of the original batman. I love Val Kilmer, but he is not batman. Nor are the other actors. They are just trying to be cool like the retro TV series. Similar to no one else can be Bewitched, like Elizabeth Montgomery.
I have a bunch of Adam West as Batman postcards on ebay. They were made in the 70s, in Spain. I also have retro Munsters and Forbidden Planet.