What novelistic insights he was able to offer into superheroic tropes were stale and unoriginal (the Wild Cards series did all of it better), his versions of the famous characters he didn't have the licenses to use were boring (Identity Crisis starred the actual Justice League, so I cared how those characters reacted to human tragedy, unlike these stiffs), and even the massive crossover events he seemed to relish describing in breathless paragraphs sounded dull. At least he had a clever way of framing the inexplicable nature of supervillains, ascribing it to a clinical condition with an acronym and everything, but that bit came early in the book, and never amounted to anything with the supervillain POV main character.