There's no evidence/number for the ideal stat allocation. There're just assumptions and individual ideas of what works and what not. It depends on what you find working or value. I'm allocating 25/75 to str/vit since I think MRD's mitigation without a shield is abysmal and needs some STR to deal more damage and heal back which is what I think is MRD is about. Again, what you think each class is might differ from mine.