Oh yeah, the tiebreak systems used were an issue regarding who got the championship plaques. I did some research on this and the best info seemed to come from the WinTD help screens and supported the Google research. What WinTD has to say is below.
I ended up deciding to go with the Team Performance Index as the first tiebreak, since it seemed to be the best by most accounts, albeit a bit complicated. Game/Match Points was used as the second tiebreak. There were no board awards to use individual tiebreaks for.
At the end of the tournament, players reverted to things they were familiar with and could calculate easily to evaluate my choice of tiebreak and its performance. Of course, after 3 rounds we had ties in 3 of the four possible categories of team championship. One team had members a bit upset about the tiebreak result, having lost 125.5 to 125.0 based on the Performance Index.
Any suggestions based on experiences regarding team tiebreaks would be appreciated.
Mike Swatek
Text Below from WinTD help screens
Team Tournament Tie Breaks
WinTD offers three tie-break systems used only for team tournaments: US Amateur Teams, Performance Index, and Game Points. These are only used for team section tie breaks and are ignored for other types. The USAT takes the sum of opponent’s matches won x points scored against that opponent (WinTD actually produces 2 x this definition to keep things at one decimal). The Performance Index is a weighted sum of the total game points and the team’s Solkoff (see description below). Game/Match Points is the sum of total points won (game points) if you are basing placement on match results and the number of match points if you are basing placement on game points.
WinTD will use the top four tie breaks to break team ties. To determine individual board awards in team tournaments, it will use the top four tie-breaks excluding team-specific tie breaks. For team tournaments, you should probably list either the USAT or the Performance Index first. Use Game/Match Points as the secondary tie break if you want that to have precedence over the match records of the opponents (Solkoff); otherwise, just use the one team tie breaker and put the individual tie breaks next. (A secondary tie break for teams is rarely needed with either USAT or the Performance Index, since they will almost never match after three or four rounds unless the two teams had identical results against opponents with identical records).
Choosing a Team Tie Break
It’s possible to use just a standard tie break like Solkoff or Modified Median as the first tie breaker in team tournaments. This, however, has the drawback that individual games are meaningless once the overall outcome of the match has been determined. The simplest of the three special team tie breaks is Game/Match Points. It is not a good choice for a first tie breaker because it is likely to produce the opposite of the desired result: a team which faces weak opposition is likely to pile up more game points than a team facing tougher opponents.
The US Amateur Teams tie break is superior to those. It has two minor drawbacks: the individual games against a very weak opponent are unlikely to count much (they don’t count at all against an opponent who gets 0 match points) and it tends to put too much weight on crushing wins against middle of the pack teams versus competitive matches with top teams. (4-0 against a team with a 2.5-3.5 record is worth more than 1.5-2.5 against a 6-0 team). The flip side of giving more tie break points to wins against high-scoring teams is that losses to high-scoring teams hurt more than losses to low-scoring teams.
The Performance Index is an experimental tie breaker. It takes a weighted sum of the Solkoff and Game Points, with the weight on the Solkoff becoming higher as the number of rounds increases. It is based upon the following calculation: suppose a team scores S (out of G games) against an opponent who scores W match points in R rounds. Assign to this opponent a base performance value of 100+(W/R-1/2)(50+10R). (This is roughly 1/10 of the typical “rating” for such a performance if all teams had a prior rating of 1000 - we divide the “rating” calculations by 10 to give it a scale more like other tie breakers, and to avoid confusion with the actual ratings). Add to this (S/G-1/2)*80 to get the performance index for this match. Take the average of these across all of the team’s matches. (Unplayed rounds are treated as 0 scores against an opponent scoring 0, as they are in the other tie breakers). Since the sum of W’s is the Solkoff and the sum of S’s is Game Points, the result will be a weighted sum of Solkoff and Game Points. Unlike the USAT tie break, all games are equally valuable. It tends to rank teams pretty similarly to the USAT, but seems more likely than the USAT to place highly teams which lose to the top teams over those which lose to lower scoring teams.