Now wait a second... I did some research, and it seems that the current scoring system is the least flawed. Because scores for different rankings are weighted, if you just fight newbies all the time, you won't be getting as many points as fighting good players (not saying that newbies aren't good, but most aren't).

Or someone can have luck, beat TarkanX once and get in the top 100.

That is why it is the least flawed, not flawless.