User blog comment:B214/Question and Answers/@comment-24053170-20131106011324/@comment-180.194.240.92-20131108105148

Reaching Balance-Breaker does not have anything to do with the amount of power the owner possesses or is given to but the feelings that the possessor has, just like what B214 stated. The best example is the possessor of the shadow sacred gear in the Kyoto arc, maybe you won't see that point in Ise because his way of reaching his BB is abnormal but that there are numerous statements and proofs that the feelings of the possessor plays a vital role in reaching Balance-Breaker the normal way.

For the 2nd question, those two powers will only negate each other. Ddraig and Albion always used those powers with each other when they fought. There is no third party involved but the logic still applies. For example, Albion halves Ddraig's power while Ddraig doubles to increase his, thus reaching a stalemate and having no effect.