User blog comment:B214/High School DxD New Episode 3 Discussion/@comment-220.255.2.171-20130722090653/@comment-1359322-20130724171610

The Boosted Gear and Divine Dividing are already like some sort of cheat, and they even have the Juggernaut Drive to add.

As for the Vritra's promotion, it was the result of multiple Vritra Sacred Gear combined into one. Well Vritra is a Dragon King in terms of technique, so that may also be why the Vritra Promotion exist.