The CL is a knockout competition. Comparing it to a league is ridiculous, as they both operate in completely different manners. What do you mean there 'is only one way to subjectively compare'? That is opposite of what subjective is, there is an infinite amount of way to subjectively compare the league. For example: I believe the EPL is better than the Bundesliga because there is a higher goal per game average; or the Bundesliga is stronger because of parity and dispersal of home grown talent. You are thinking of 'objective'.