This seems like a difficult situation.
Let's assume that there is no funny business at all with the team that got DQ'd nor with any other team. Let's also assume for simplicity all teams are comprised of players rated 5,5,5,4,4 (adds to 23).
Suppose a 5 is a player rated from 421 - 500, so an average 5 is about 460
Suppose a 4 is a player rated from 341 - 420, so an average 4 is about 380
Amongst all the teams there will be a mix of low 4's, mid 4's, high 4's, low 5's, etc. So a typical team at the local level will be rated 2140 (380+380+460+460+460)
The highest possible legitimate team will be rated 200 points higher, at 2340. But it is pretty unlikely to find a team near 2340.
But wait!
The local teams all play off and a select group go to regionals. Those advancing to regionals will tend to average higher than 2140 because they are the group that won locally. Maybe they average 2190. Then a select group win at the regional level and get a trip to nationals. Now this select-select group averages 2240.
Then once you get into the $$ rounds at nationals you have teams that have beaten a handful of the select-select group that is at nationals. Now the small number of remaining teams average 2300. They're pretty much all high 4's and high 5's or they wouldn't be there.
With all these filters, maybe we shouldn't be surprised to find near the end the team that is already pushing the cap with skill AND has players that happen to be clicking...
I don't know how you distinguish this from the various bad-faith scenarios.