Board Thread:General Discussion/@comment-24942479-20170607070523/@comment-25926288-20170607112730

Power: Edge goes to Regina (Given the dialogue in 5x12, I can only assume Regina's magic makeup (light and dark would give her the edge.)

Intelligence/Manipulation: Cora (no question there)

Skill/Versatility: Edge goes to Regina (Same teacher, same spell books, but Regina absorbed a spell or two from the book where as Cora didn't.)

Experience: Cora (Basicallly since Regina was born)

Stamina/Durability: Edge goes to Regina

Assuming no emotional distress/morals, Regina takes it 55 out of 100.

With morals/emotional distress being in character, Cora takes it 51 out of 100. Yes, in character would somehow swing it to Cora winning due to Regina likely not having it in her to face her mother herself, as shown in 2x09. However, Cora with a heart doesn't seem that much different from the one that was willing to rip her daughter's heart out.