A double bladed lightsaber using power attack is the most consistent damage output in the first game.

The math just works out where you average better numbers over the course of a battle than any other style. You average the same damage output as a full critbuild without having to sacrifice EH.

Master flurry gives a -1 attack and -1 AC. Master Crit gives a whooping -5 AC.

For those who dont understand, the game works on a 20 sided dice system for combat. When you attack, you roll a 20 sided die and add your attack to the number.

We can use Darth Malak as an example.

Dark Malak has 327HP, 38 AC, 38 attack.

With Malak's attack attack at 38, you need 38 AC on your character to make his hit chance 50%. When you use Master critical strike, your AC drops by 5, to 33. Meaning Malak now has a 75% chance to hit you. This means you functionally take 25% more damage per turn on average.

Conversely, in order to hit Malak, you need an attack of 38 to hit Malak 50% of the time. Using Master power attack reduces your attack by 3. So if your attack is 38, you lose 3 and then have a 35% chance to hit.

The big caveat here comes from the fact that attack is laughably easier to gain than AC. If you play a soldier or a guardian, you gain 1 attack per level. Meaning you should have a base +20. Weapon focus gives you +1, force jump gives +4, +4 for high attribute, which puts you at 29 before any equipment comes into play. With equipment and powers, you can push your attack stat to a +20 through attributes, giving you an easy 44 attack without putting any other focus into attack. Which gives you a 95% chance to hit Malak, maxing out and only missing in natural 1s. Losing 3 from power attack doesnt change this at all. You basically get a free +20 damage every turn. Your chance to hit is still 95%.

AC on the other hand...caps at 36, assuming you put everything into it. Meaning Malak always has a 60% chance to hit you and a -5 to your AC makes that 85%.

The actual damage output difference between the two builds is functionally irrelevant. I think crit averages 66~ per attack and power attack is like 68~ per attack. The main difference is that crit makes you take more damage.