[Module] Big Bang | Delays & Ranges

This looks like it was a last minute change based on the reconstruction patch, Post-BB in this case would have no relevance which is probably why you're so confused. Why they made such a radical change last minute is beyond me, and is certaintly unfair.

I highly doubt it was a last minute change since the damage would be much higher in Restructuring to balance the classes out. I'm assuming they just screwed up somewhere with the delay whether it's referencing Brandish (likely) or has some crazy Booster gain (unlikely).