@jeber: We're talking about ELO here, completely hopeless opponents are a bit of a rare sight. It's probably due to the opponent drawing his worst possible hand or a bad split that simply couldn't score enough damage to win. Keep in mind that Graff and Spiaghi can rob your opponent of a pretty significant amount of gap.
@waster: If your hypothesis for that week turns out to be correct, what would that mean to you as a player? Your original reason for this experiment was that you felt too many games are decided in Round 1. Would it change your feelings regarding ELO if you can establish that the ratio of 1st turn wins or losses is more determined by one's deck than any other factor (bans/unbans etc?)
This is why Freaks are so much better than they appear on paper. Yes, their bonus is worthless in later rounds. But they have the most valuable characters on turn 1 and/ or turn 2. No other clan can have a character with 8 power + pill manipulation + poison (Grudj and Baldovino) and this is the strongest combination for a turn 1 character. This is why I've always ranked Grudj slightly higher than Bogdan- SOA is mighty but it is least useful on turn 1 and really so much more powerful on turns 3 and 4. The best Freaks are optimized for turn 1 and/ or turn 2, and they should also be paired with a different clan optimized for turns 3 and 4.
Simply put, Freaks have some of the best characters in the rounds that most matter most of the time.