The CAS ruling included a logical contradiction that probably only lawyers would understand. The court went to pains to explain why the leaked/stolen emails were admissible. However it went on to say the emails were only indicative of possible payments, in some cases purely internal and speculative exchanges. The ruling stated that the actual events ie the transaction based evidence superseded the emails. So although admissible the emails became completly irrelevant, and that's why UEFA lost.
Without doubt the majority 2-1 outcome was borderline insanity. The 2 were saying there's NO evidence of wrong doing so City must win, but the 1 still said guilty. The ruling did NOT explain why he voted that way. Once again, to the lay person, another contradiction.