That fight is the last Malgus chapter. He doesn't get a boost there. Instead he gets one in his fight against Aryn.
"Thinking of Eleena blew oxygen on the embers of his anger. In life, Eleena had been his weakness, a tool to be exploited by rivals. In death, she had become his strength, her memory the lens of his rage.
He resided in the calm eye of a storm of hate. Power churned around him, within him. He did not feel as if he were drawing on the Force, using it. He felt as if he were the Force, as if he had merged with it.
He had evolved. Nothing split his loyalties any longer. He served the Force and only the Force, and his understanding of it increased daily.
The growing power whirling around him, leaking through the lid of his control, made the suppression of his Force signature impossible. All at once he lowered all of the mental barriers, let the full force of his power roil around him.
“Adraas!” he shouted, putting enough power into his voice to cause the ceiling and walls to vibrate. “Adraas!"
Originally posted by Nephthys
Thats different since I naturally have a handicap with my left leg while the technique doesn't work like that.
I'm still wondering why its the same technique as they do entirely different things. Going with Intrepid's sports metaphors it's like the difference between catching/throwing a ball and hitting one with a baseball bat.