Funny how you chose this condescending approach suggesting me to google what "CFS" ismjlef wrote:BTW, the 4 elo lead you mention does not mean "luck". 4 elo is roughly 1 Standard Deviation of the error margin. You can see on the Ipon list a column marked "CFS(next)". The error margins and results are used to determine a confidence that one program is stronger than the one below it in the list. It shows 70% for Komodo 10.4 right now. This is not proof, just the likelihood that Komodo is stronger with these settings. More games will raise CFS. If you are interested in how this works, you can google it or study the Ordo source code.
That's like me suggesting you to go to chessprogramming wiki to inform yourself how to program a chess engine.
First, there is no such thing as CFS. Actual term is LOS and LOS does not depend on error margin or what not, but only on number of wins and losses (draws are also irrelevant). Your mentioning of error margins in context of LOS is a clear indication to me that you have very limited knowledge of general and also statistics used in chess.
In practice any LOS below 95-98% is insignificant. 70% LOS for K vs H is meaningless (as I said just random) and you mentioning it as some kind of indication is nothing but an additional illustration of you having not much clue about it.