so there are several ways to shorten the match lenght.
SetType is a reference to a setting in your current game, but you shouldn't change this.
Instead, you can open the file "Profiles\Default\WT_Current.ini" and change all the lines with :
NbSet_[n][t] = x
- [n] can be 0, 1, 2, 3 (that's the SetType num you saw in the TourCategory.ini) or q (for qualifications)
- [t] can be n for normal tour, or f for final
- x is the number of sets
NbSet_3n = 1
will change normal rounds of the tournaments which have "SetType = 3" (ie: Grand Slam) to be played in 1 set.
just enter the cheat code "mtkil" (without the quotes) to win the match after you won the 1st set (for example)
turn on the "Advanced options" in the "Misc Options" menu, then start a new game in the "World Tour" : you'll see then an additional screen letting you choose the number of sets depending of the tournament type.
Still in the "Misc Options" menu, after you'll have turned on the "Advanced options", you'll see the additional setting: "Games per set".
No, I didn't hear about WTA data for Tennis Elbow. But if someone did one, I hope he/she could share it with all of us..!