I don't think that's quite right: the idea is that a good union can insulate you from bad management. So you're using a different dice roll, but it's just one r

I don't think that's quite right: the idea is that a good union can insulate you from bad management. So you're using a different dice roll, but it's just one roll. (It is true that things are strictly worse under good management + a bad union than under good management + no union.) Also, you usually have more influence in what your union does than what your management does. If I have to pick one of two dice to roll, I'll pick the one that's weighted in my favor, even if it sometimes comes up 1.