This is really poor logic imo. Irrespective of whether DT is the most important position on defense, if someone says DT is the most important position on defense, that does not logically equate to them saying that the team with the better DT should or will win the game.
You said EDGE or Mike is the more important position on defense, which is okay to think. I don't know **** about football so I won't argue with you. But nobody is accusing you of saying whichever team has the better Mike should win the game.
Many people think QB is the most important position in football, but a lot of those people still picked the Eagles to beat the Chiefs in the super bowl, despite having the lesser QB. As you know, there are always other factors at play other than who has the best player at the most important position.
Don't turn people's opinion that DT is the most important position into a bad-faith argument.