Placement Matchmaking?

[worldfamous]

It seems to me that the problem lies in the weight of the value against the ranked player. It seems best to match non ranked vs ranked in order to evaluate the non ranked skill level. However, there shouldn't be much weight against the ranked player, as there is not enough information to make an accurate judgment. It should almost be considered a freebie for the ranked player, in terms of skill rating. I wonder, is the hidden skill rating like the BCS, where your past wins/losses change in value as the season progresses?