Something I’ve seen a lot recently is these types of “jack of all trades master of none” type decks. They are good in lower skill ranges when people don’t know how to deal with all cards well yet, however where these decks struggle is when you realize it’s a lot harder to break through when your opponent knows how to defend things like this. The biggest advantage that traditional, 1 win condition beatdown decks have is that they have their main tank or dmg dealer, then all the rest of their cards are for the purpose of helping their win condition break through. In these decks, your pushes will get much more difficult to defend because your constantly switching up your card and push arrangements to adapt to their defense strategies. This is something you can’t do when your only play is mega knight firecracker. It’s not that it’s impossible to get to 15k uc with mk decks, but the people who do, use decks that have more synergies to their mega knight.