I end up taking his whole history into account & instead of thinking he was scared to take command, I expect he has subconscious doubt about his worthiness, being that his whole career is built on having his 1st captain (& probably most influential) be the one from the Pegasus, who he aided in getting the whole crew killed, & then covered it up, & used that captain's recommendation to further his career. It kind of undermines his whole worth as an officer to some degree, & it also explains why he's such a dick to lesser officers like Ro or Barclay, & why he's such a gung ho mock hero type guy. It's all a façade, hiding a very fragile person imho