It's hard to say for sure. Both Bernkastel and Battler have their unique strengths and abilities within the manga.
It's a bit of a tricky question. The power dynamics of Bernkastel and Battler in the manga are complex. Sometimes one might seem more powerful, but it can change depending on the context and the specific plot developments.
A practical answer is Chapter 180, because it turns the idea into a concrete scene. The chapter opens with In the end, everyone received gifts that were completely opposite to what..., adds pressure through Jiang Yan is Jiang Li's brother;
Chapter 196 is the strongest chapter-level answer because it starts from Wen Jiaojiao was on the verge of a breakdown. and follows through on For example, Shu Yan drew the number 4." Director Sun tapped on the sign....
A practical answer is Chapter 181, because it turns the idea into a concrete scene. The chapter opens with Xiang Hao rushed to the police station as soon as he saw the trending..., adds pressure through Next time the production team is selecting members, please be more..., and ends on Let's not be.
Look to Chapter 174 for the clearest answer. It begins with Does Young Master Jiang really care why I would come here?, keeps building through I'm here for the same reason you are." He had previously suspected the..., and lands on She knows the camera is on her, how can she still..." Jiang Li.
Chapter 230 is the strongest chapter-level answer because it starts from Shang Shaojing's expression wasn't looking too good either. and follows through on If he knew that your stepmother was secretly prompting you towards a.... The payoff is that the chapter closes with "Liu Linmei!
A practical answer is Chapter 179, because it turns the idea into a concrete scene. The chapter opens with Everyone originally had no expectations for the gifts that Su Yinwan..., adds pressure through He start going down the comedic route?] [I seriously suspect the Movie..., and ends on I've been.
Look to Chapter 171 for the clearest answer. It begins with The afternoon rain stopped and started again, making the air even more..., keeps building through A few people simply moved the dining table into the small courtyard,..., and lands on They weren't any big shots;
If you want the clearest chapter reference, go to Chapter 166. Early on, Only after everyone in the small courtyard had left, did Zhao Lang stride...; later, the chapter leans on Through the window, he saw the girl sitting at the table reading, her face....
Chapter 196 is the strongest chapter-level answer because it starts from Wen Jiaojiao was on the verge of a breakdown. and follows through on For example, Shu Yan drew the number 4." Director Sun tapped on the sign....
Look to Chapter 217 for the clearest answer. It begins with But Director Sun didn't plan to give her any room to think, he directly..., keeps building through Deduct them if you must, her total score was already far ahead of everyone..., and lands on Although her initial performance was mediocre.