Race to 3 on the winners side.
Race to 2 on the losers side
A player battles back from the losers side to play for 1 & 2 spot.
Is it back to a race to 3?
It's whatever the tournament director wants it to be.
But, as a general rule, in the finals, both players race to the same amount of games each set, regardless of whether they are in the winner's / loser's bracket.And it sure wouldn't be fair to make it a race to 2 for the winner, so that pretty much mandates it being a race to 3.
And again, whether it is a single race to 3, winner take all, or two sets, with a race to 3 for the first set, and a race to 2 for the second set, is 100% on the tournament director.