Looked at your matches and cannot find any games where your opponent had an average player salary way higher than you...and not 50-100K at all.
I have only won against much stronger teams when their gameshape and enthusiasm were very low. And I have never lost against a team with lower average salary.
But hey, show me an example where you had equal gameshape and enthusiasm but the other team had a salary average much higher than you - where you out-smarted him with brilliant tactics.
Whatever - I don't mind, BB is good fun but seems very simplistic and not at all that complex some people want to make it to be.