Leader ability sidious or Phasma ?

But overall you can determine the impact of sid by saying that over all damage is increased by 1.7 * .13 = 22% including any special procs due to crits. That being said you can express phasma's damage increase by the average damage factor of your team multiplied by .16 for each non FO character or .32 for each FO character. Depending on the composition of the team this means on average damage will be lower under phasma. However, what you cannot see from the averages is the fact that two characters attackingbat once allows for the possibility of both characters critting. This means that on a phasma team the range of damage is greater creating damage spikes which can devestate an enemy by leading to dead enemies rather than just badly hurt enemies.