User blog comment:B214/Question and Answers 6/@comment-2607:FB90:603D:5340:4082:7A47:2AEA:26C5-20190115200556/@comment-28884330-20190121224735

It's not like adding an Abyss Side and Breakdown the Beast together would be anything significant or even stack. The Sacred Gear's power source is the same in the end. Things such as Balance Breaker in its different types, Breakdown the Beast etc are just different ways of using the same power source.

"yeah just like he said you cant just judge the power of the sacred gear just by the power source alone." You actually can. A Sacred Gear cannot exceed the maximum output of its power source, that would be making power out of nothing which is illogical and has never been shown by any Sacred Gear.