Just played my 300th game and still have only 1 super rare card to show for it, which I got about 200 games ago. I guess I got lucky by getting a rare Stone Cold, rare Rock and super rare Cody Rhodes in my first 100 games, but now the losses are starting to pile up after I hit the Super Rare+ tier. Pretty much every opponent has at least 2 super rare cards.
And yea, the KOTR is way too long. Although I'm about to finish second to start the tournament part of it, I was only in the rare tier when I started it so the best I could win is 2 rare cards, which I really don't care about.
I also managed to get 98/100 common cards, with my 2 missing cards being both Luke Harper cards. This game is still pretty fun at the moment but it seems like the more you play, the more frustrating it's going to be for people who aren't spending any $, which I refuse to ever do.