User blog comment:Drayco90/Drayco's Summer Sci-Fi Special: The Guardians of the Galaxy vs. Shepard's Team/@comment-5465602-20140821163630/@comment-2149911-20140830185054

According to Drayco, Moondragon's power devrives from immense concentration to perform those exact feats. She won't be having that when people with Guns and Biotic powers are gunning after her, which leaves her with options that require more physical input. Answer solved.