But Vigo himself confirmed that "several" moves were made for him (although it's hard to believe). This is a fact. Formally, he violated the rules. Formally...
But no one will ban him for a couple of moves, you understand that, and AK (as well as most of the forum) is confident that not just a couple of moves were made for Vigo, but at least several games were played. This is where a psychological portrait of the person is needed, and can he do it? What do we see in Vigo? Unprincipled, a cheat, irresponsible, a liar. By comparing these and many other facts, AK comes to the conclusion that Vigo cheated 99.9% of the time. There will never be 100%, not unless Vigo himself confirms it. But 99.9% is already enough, it's more accurate than a DNA test.