I guess what it comes down to is...
Mugger comes up to me with knife - asks for wallet. I choose not to run, and confront him, and I end up unhurt and retaining my wallet. Am I a bad Aikidoka because I didn't run away when I could have?
Naw. Mostly lucky.
I've grown fond of this quote: "Sometimes you eat the bear. Sometimes the bear eats you."
Simple enough really...ya gotta make your own judgments within each specific situation.