You cannot say Ruslan was dominant in the event. He was dominant in the final in spades, and yes, it was one of the more impressive single match performances of the last twenty years.
About five years ago, Appleton ran 200 and out in the Dragon 14.1 event in a run of great technical elegance. I witnessed that run.
In the Dragon 14.1 event in, I'm guessing, 2010 at Comet Billiards in New Jersey, Oliver Ortmann ran 125 and out in three consecutive matches. Yes, I was there for that tournament, too. These were races to 125 and Ortmann went 375 balls without a miss against three different opponents on three different tables.
Perhaps even more amazing was a performance for which I was not present, namely Thorsten Hohmann's effort at the 2005 European Straight Pool Championships, in which he averaged about 50 balls per inning for the entire event on the way to victory,
Others can chime in and add to, or disagree with, these choices but for me, those were the best performances in 14.1 in recent times.