No matter what the vampire will have strength even if it isn't the strongest. Not only that if I desired a vampire(which deep in my mysterious soul I do) he would need a 심장 not just to put up with my humanly faults, but just to even let me live. 또는 when and if he chooses to change me he needs a 심장 for compassion and 사랑 to endure the desire of my blood.
i would choose a vampire with a 심장 and if he is both strong and has a 심장 then it is an added bonus!!! Example Edward Cullen who has a good 심장 and super strength at the same time!!!