That's essentially the numbers I came up with, but that leads to 60% evade and 120% accuracy. Thomas has 70% evade (Parry works fine on ranged weapons) and, if I can read Dhyer correctly, 135% accuracy. HK can take an extra hit due to good HP, Thomas dies in one less hit (remember, HK is half average damage) due to poor HP, so it all worked out to both killing on turn 7, and due to how KotOR handles initiative I felt that Thomas being marginally above average speed was the greater claim to going first.
As I said though, this supposes that the average endgame enemy has comperable dex/strength (as appropriate) and defense to the PC cast average (Since ultimately, like FE games, real accuracy and evade is entirely dependant on enemy stats rather than native to characters/attacks, and that's how we calculate FE accuracy/evade). So it could be that enemies suck at these things and I'm undervaluing HK here. But my impression is that the endgame is predominantly Dark Jedi and Droids, so I SUSPECT it's not too far off. I do wish I could have found the relevant stats, in speaking with people it seems almost certain that they are out there ripped from the game since it came to the PC.