User blog comment:B214/Light Novel Volume 16 spoilers/@comment-5185939-20131020023649/@comment-1359322-20131020031554

The Hero Faction did do data collection on the Supernatural beings. Plus Euclid also used Grendel to collect data from the Gremory and Sitri Team in Volume 14, so maybe those datas contributed to the creation of the Boosted Gear duplicated. I won't be surprise if they manage to create a Divine Dividing duplicate too.