แข็งชนแข็ง

Missing, extremely new, or very obvious to obtain.

Both English and Chinese (硬碰硬; translates to "head-to-head") titles basically mean the same thing. To use the same force as the opponent to beat them. The Shell of Faded Rage makes it harder to try and inflict Weakness Break, so players might as well beat it without needing to utilize Weakness Break.