daredevil a perfect linear association would mean that we would beat Bayern 10/10 times, so nobody would argue against that (and if they were, they would put everything they owned on that bet). But our current team would have better chances against this Bayern than against a stronger version of them, and this team would have a better chance against Bayern than what Arsenal 19/20 would have.
Becoming a better team gives you better chances both domestically and in European football. There's nothing amazing about it.