[The Lucas]

I think 4%-6% of the teams at any regional or nationals division will stay undefeated. This means that a regional with 50 teams will have 2-3 undefeated teams, while a nat division with 80 teams will have 3-5. Also, at smaller regionals it will tend towards the 4% and at larger events it will tend toward 6% due to the lower number of matches. The rest of the 8 will be one-loss teams with maybe a 2-loss team sneaking in.

I think this year there will be a larger deviation in winning percentages, because the dominant teams will win at all costs rather than keeping the score high and risking a loss, like last year (remember collusion?). In fact, I believe it will be common place for the one-loss teams to have higher Ranking Scores than undefeated teams. This will happen because strong teams that lose a match early in the tournament will desperately try to inflate their Ranking Score, while undefeated teams will adopt a Lombardi philosophy:

"Winning isn't everything, it's the only thing."