That's not wrong, but it's also not a problem for anyone to see the strength of teams through their respective domestic leagues even though it might not be accurate enough to make an assessment because what you say can also happen in the European League so some people sometimes also can be surprised when there is a different result for a team they don't like. But for a match like Milan vs Roma, I am still a bit short in giving an assessment because both teams are not in bad condition at the moment.