OldboyHe wasn't complete noob when started to play online as Dsquared. Even close.
There was very powerful player from the very start.
With 15 online games and the right approach, (studying saves, looking at streams, reading tactical posts etc.) you can get far. On the other hand it can be some old pro under new name.
Whether he is an old pro or not is not the issue. We have new standards today with the protected saves.
What is important is whether he found a way to cheat even though password protected saves were used. Hard evidence is needed to prove that.