I'm sure this is nothing new, but just thought I'd share my opinion. I don't play the ladder primarily to see how high I can climb, but to have competitive matches to see where I stack up. I had played all month between 10-12, but starting yesterday climbed from 11 to 7 by going 22-13.
My biggest observation is that skill level and deck composition isn't that different from rank 12 to rank 7. What typically determines the winner is still your starting hand and the first few cards you draw. Are other CCG this dependent on what cards you draw? It just seems like with an ideal start, I could beat a pro streamer; but with an unlucky start, I could lose to just about anyone. A timely silence (or one of many other useful effects) could change the entire outcome of the match. It just seems pretty random (or at least more random than I'd like it to be) that drawing that one card at the right time means victory and vice-versa.
I may look into MtG. From what I understand, they have some systems in place to help alleviate some of the randomness that is inherent in card games.