I think I figured out the process how the same people are winning every tournament but not 100% sure...

Player A - the winner
Player B - the one who gets used

They start the tourney as soon as it opens...literally.
A has a one star deck. B has a max star deck. A beats B. A in first and B in second in the standings now. A continues to beat B as long as the points B gets for a loss keep them in second, if not A takes a loss to B to give B a boost back into second. Rinse,repeat until done. This means A(in first) is always beating B(second-ideally) with a one star deck vs a max star deck. So the points A is getting cannot be matched anymore by anyone since no one else can beat the ones in first or second for the rest of the tourney? I don't know exactly how the scoring works in regards to the standings so I'm wondering is this right?