This is an interesting idea! I’m not so keen on scoring methods, as although they can give a good beginning indication, they are also very subjective.
This would work for the output, but not so sure it works for soft skills, such as empathy. As how do you measure this?
In terms of fitting into the role and company culture, this can be tested out via a person’s personality, sense of fun, what they do outside of work for fun, their work ethics etc. Also things that would be hard to measure.
There would also be a range of differences, as some UXers work in a team, some by themselves, some aren’t so organised and others are insanely organised, but they both can do great work.
Portfolios and CV’s get you to the interview, but I think it is how you portray yourself in the interview and your knowledge, passion, and drive for the topic as well as other soft skills that make an employer want to employ you.