I'm for a less inclusive HOF. Palmer probably isn't in mine. Now, onto the question. I'm unfair to Mussina because I'm a Yankee fan. First, I've never seen a pitcher cruise thru 4-5-6 innings and explode in the time it takes me to walk to fridge and grab a beer. I'm sure it's an exaggeration when I say I know I saw him pitch 5 scoreless innings with one hit then give up a walk, a hit, homer and then another. He could turn a 4-0 lead into a 6-4 deficit before I had time to cuss at him. I eventually refused to watch him pitch for the Yanks. Second, they are pretty similar.
Forgot one thing. Mussina also once said "I did my job. Talk to the other guys" after a close, low-scoring loss. You don't do that.