By next season we will be seeing both teams in the champions league I think we will have a better a clearer bases for judgement and comparison because they are both going to be in the champions league and at same time in their domestic leagues aswell. Not been able to win the finals of the Europa by Leverkusen this season was actually embarrassing but then that's the game of football, untill it's over ,it's not yet over as you will still get to be surprised even at the last minute of a game, nevertheless Leverkusen did a very good job this season of which we wouldn't see them any less because of that one game which is something that could happen to anyone.
I know with Real Madrid it's absolutely different and such has got a very slim chance of happening as they have a record of not loosing a single champions league finals since they have Made it to the finals over ten times so I doubt if it will be different with this but then again it's football and anything can happen even with the very slim chances around it, such shouldn't be neglected as there are possibilities in such.