No name account
What did he have to do to get to the top? He picked the weakest of all accounts, Alexander3. I have this account on ignore because I don't want to be taken for a fool. He is intentionally playing with a weak engine and intentionally playing with a blunder book. In my eyes this is just a fake account so people win more games. Some people take advantage of that:
Win 14x against Alexander3 and you are on top. What do you have to do? It's very simple: Collect all games of Alexander3 and create a CTG killer book out of it. Alexander3 will always play the same because he wants to play weak on purpose.