At 7.54 Scourge says Vitiate will recover quickly and the Hero can't afford to go save anyone. At 27.45 the confrontation with Vitiate occurs and he says the Hero dissipated his energy saving Kira earlier in the video. Note the lightning and clones at the start of the fight. If you didn't go to save Kira he doesn't use them:
4.40
Edit: Whoops! Top video fixed.