Being an Admiral just wasn't something Kirk was cut out to be, both McCoy and Spock knew it and told him.
James
Going simply off what the OP says I think Kirk meets the criteria. He was decent. He saved the earth twice as an Admiral, he sacrificed his ship to protect the secrets of what a Klingons believed was a weapon of mass destruction.
Admiral Alynna Nechayev wasn't corrupt in the slightest, she was simply a horrendous Bitch.
I don't know... We didn't see that much of Nechayev, but she reminds me a lot of Captain Janeway. If Voyager had been Nechayev's command, and we had a chance to see her day in and day out -- and not only when she was crushing Picard's warped sense of morality at any cost -- we would probably have a different opinion of her.
I should note that I'm not saying 'horrendous bitch' in a bad way.
