We have not had any conflicts with any interstellar civilizations (ICs?) yet, so the first we have to deal with can’t have had fewer conflicts with other interstellar civilizations than us, only a) the same as us (0), which counts in favour of neither of us, or b) more than us (>0), which counts towards their advantage. So our prior should be that they have an advantage in expectation.
We have not had any conflicts with any interstellar civilizations (ICs?) yet, so the first we have to deal with can’t have had fewer conflicts with other interstellar civilizations than us, only a) the same as us (0), which counts in favour of neither of us, or b) more than us (>0), which counts towards their advantage. So our prior should be that they have an advantage in expectation.