User blog comment:Busecatu/Why Ranked System is broken./@comment-18521310-20131009132629

I placed Silver II because I ran all and  in my placements. Problem is, I'm not a Silver II player. I'm not even sure I'm a Silver V player. But I'm good with those champions. So I placed higher than I should have. ... I then got crushed in almost every game since.

So, I suppose I have to agree with you based on my personal experience.