It takes a special sort of person to be an author and generally they are just as interesting as their characters. Take Kurt Vonnegut for example. He was one of the best authors of the 20th century and his story was just as interesting as that of many of his characters.
People write books to help people escape to other places and times. Authors can give characters powers and special abilities that the average person cannot possibly have. They can make a character perform magic. They can make a character fly. For these reasons, the characters often end up more interesting than the author, themselves.
Yes, authors are as interesting as the characters they create. The mere fact that they are able to create these characters shows the scope of their creativity and joy. Authors, however, don't usually find themselves in situations like the ones their characters experience. They are often found locked away somewhere, expressing their interesting facets and ideas on paper for the rest of us to enjoy.