While there are certainly some bad CEOs in this list starting out with Jonathan Schwartz is not good. He merely failed to make the improbable saving throw that was required for SUN in 2006, which does not make him a bad CEO and certainly not a "worst" one. A total failure to recognize the terrible shape SUN was in at that time indicates a very superficial look at the issue.
Some of the other examples where I know something of the story seem to be sound, but I just can't trust the author on those companies and CEOs where we're depending on the author's judgment calls.