Once again, we are running into the problem of the term "rational" referring to at least two different concepts.

1. Epistemic rationality: The map should reflect the terroritory. Truth above all else. 2. Instrumental rationality: You should win. My values are such that making my friends happy is a form of winning.

You can't expect to achieve your goals unless you can match options with outcomes. How we define 'winning' is itself something that's determined by our goals, and reality determines which goals are self-compatible.