I think that Story and Characters are the hardest metrics to measure. That being said, I consider a good story to be one with little to no plot holes, interesting plot progression, and generally how much I enjoyed what was going on. Characters is even harder cause then you start thinking "ok am I rating the quality of the characters (how much development/progression was there) or how well the actors played the characters...but then you're just rating acting."
So, take Goon for example: I would rate it fairly high in Originality, slightly above average for Characters, Story, and Rewatch, and fairly high in Enjoyment (overall close to a 7-7.5 out of 10).
To me, Enjoyment is the best indicator for how well the movie did in respect to its genre.