In my opinion you will always do better than your opponents when you play the game actively, train your players and so on. Not necessarily in a single game, but in the long run yes. It's why league is always the easiest competition, bad luck balances itself out between the teams generally. For example in my league there is me and another very strong team, % better than me, but I beat him in both matches. Then he had 2 "troll results" and I had only one, so I am 8 points clear right now. Even though troll result is a term that is used quite often. My opponent was 15% weaker and I think not very active. It's a game I should have won and I think would have won 8 times out of 10 but then I lost, not a troll in that sense.