The only reason I can see not to be confident is that - as you say - the UEFA governance process reflected a 'kangaroo court' - but there was the option of recourse to CAS
The fans of other clubs make a big deal about the EPL process not having that arbitration step and they are hoping that the EPL process will put CITY out of business based on 'evidence' that has been proven to be unsound
That speaks more about the character of those 'fans' - who, by their own words, therefore prefer a rigged system to a fair outcome if it can advance their preference/bias