See, that's what I'm talking about. My opinion is in most cases people would choose:
Neither inaccurate nor accurate
Neither unsatisfied nor satisfied
Neither slowly nor quickly
Neither unreasonable nor reasonable
Which seems, to me logic, that your "stars" would eventually all end up at "3". Otherwise those 5 rating categories have no bearing on the numerical weight of the answer, and trying to find out what it means would be met with a "Sorry, that's classified".
I think as far as "shipping charges" go, most people are picking the "Neither unreasonable nor reasonable" category, which is why nobody is seeing anything close to a "5" for shipping