Earlier quoted context omitted.
This is really common in fighting games. Many okay players will get beat by really bad players who are really random. Better players in these games play in such a way as to mitigate effects of the randomness of their opponent.
That isn't a fair ranking. Some people are more idealist than you, and a priori want to believe others will play well. If you stick them in a lobby full of smashy noobs, they may not live long enough to update on those beliefs (within the single game). Of course, the same happens in reverse: if you go into a game assuming everyone is a smashy noob, and they're actually good at the game, you're going to end up in the…
Why is it not fair? I was just stating how it goes. It's pretty well documented that the best players have the best defense, unless it's a game like UMVC3. The players at higher ranks tend to be better at playing defense and they just let their opponents kill themselves. They don't get blown up by wake up supers, dps, jump ins, etc. Okay players might be good at doing combos, but their game sense isn't great and they will frequently put themselves in positions to have the tables turned on them. They also don't focus on punishing mistakes and capitalizing on their defense. If you have good game sense, you can actually beat people really well with pretty mediocre execution.
Even if you play multiple matches, these okay players will lose a surprising amount to the players who play randomly and are smashy noobs.