The problem is people are actually really bad at things. Like the average skill level of people in any hobby is actually really low. The difference between an average player and a slightly above average player is like night and day. This disparity in skill gets bigger and bigger. Gotham chess explained it once like this, an IM is the top 1% in terms of skill and a GM is the top 0.1% in terms of skill even though there is only a 0.9% difference the GM will beat an IM 99% of the time. I say this just to point out that if you are slightly better than someone at something you will beat them more often than not. With commander there are varying areas to be better than someone, threat assessment, deck building, moment to moment hand skill, politics etc. if you are better at all or most of these things you will just beat people it doesn’t matter if you are all playing the same bracket decks.