MMR is a joke and to think MMR tells a persons skill level is absurd especially in a game that is MOSTLY RNG based.
How many games (especially against Mage or Painlock) do you lose because of their RNG compared to yours?
This game has VERY VERY little skill left in it thanks to horrid card design and an RNG system that wants you to stay at 50%.
I can’t tell you how many games I have lost simply due to the deck I played against because it was my COUNTER deck.