User blog comment:SpiritedDreaming/RWBY: Attack on Kevin Tower Defense Game/@comment-26397825-20161011121047/@comment-25936766-20161011143406

@Hazel: Well, if the eyes are going to paralyze the Grimm-spawning for days, lesser damage is only fair. It's not like the total damage caused would be too different. Glynda causes 20 to 1 Grimm, SEs caused 10 to random ones. Glynda can already be activated every day as well.

And given the Grimm's strength is their endless numbers, I say the SEs would still be powerful.

As for why it paralyzes the spawning.....I had it understood that when the Dragon was frozen, it stopped spawning Grimm. As in, it stopped sweating Grimm to life. But more Grimm kept coming from elsewhere even after it was frozen, hence the idea of weaker Grimm spawning once Kevin can be attacked (after all, we are taking some small liberties).