Plot armor really kicked hard in to prevent him from suffering for taking that talent with a dire demerit...
Honestly he should have taken the immortal talent, after it's upgrade it would have made the synergy between it, the fallen title and his other reg skill would have made him a almost unkillable monstrosity.
Also wasn't that SS rank talent holders on the light sides effect to increase attack damage by 80% even if it isn't final attack it seems still better than the mcs, or is final attack supposed to mean true damage?