Maybe you can explain why a club that didn't even vote for him can sign a player on high wages for 50m and have him registered in their B team and in contrast a club who voted for him signs a player for 48m LESS, on far lower wages, but has their application for him to be registered for their B team rejected.
Or the difference in how Madrid's VIP boxes were allowed to count towards FFP before money generated from them were in the coffers, but Barca's aren't. Or the absurdity of how outside funding in to the club ( Congo deal ) can't be included, all of a sudden, until Barca becomes 1:1. ( Bit of a counter productive rule that one).
There are many ways to look at two similar situations for two different clubs in a positive light for one and negative light for the other, without exposing yourself to litigation.
Especially when the rules are so subjective.
And it is not even exclusive to La Liga. In the EPL, do you think they would let Villa or Newcastle get away with the shenanigans that Chelsea and United are in regards to PSR ??
You have to be naive beyond belief to think FFP rules aren't subject to manipulation and are being applied fairly across the board.