That is the question.
It seems so far.
That is why people want TS to look into the battle records of those 9 players to check how they did it.
But alas TS probably did not save the battle data so they cannot check it for cheating.
That is what I fear.
Well, if I would be TS I would freeze those 9 accounts, then contact those 9 players via email and tell them that they have to explain how they got a perfect score if they want their account unfrozen.
If they cannot explain how they did it or if the testing of their explanation proves it to not work then I would reset those accounts completely.
But once again I doubt TS will do so.