I've always sorta trusted Baker, too. Maybe I'm wrong. Maybe he's just a good salesman and I'm a sucker, but if I have to go with Rumsfeld or Baker, I think I might have to go with Baker on that one.
I don't think there's any contention between the two; they play different roles. You can't have your SecDef say something like this. It should come from some éminence grise who is not now part of the Administration. That way it doesn't sound like it's actually part of Administration policy... yet. Baker is perfect.