I once worked with some very, very successful direct marketing people, and along the way gathered some stellar advice on common advertising tropes. One of these is, "don't talk down to your audience."
Few people challenge this axiom of marketing, but the real insight lies in identifying what's "talking down". It's easy to assume that you must intend to talk down to your audience in order to fall in to this trap, but it's just as easy for down-talking elements to enter your marketing organically.
"This guy is fast" talks down to your audience because it assumes that there is no more subtle way to illustrate the rating feature, which can also be understood by your audience.
You should change this ASAP. The people conducting coding interviews are often programmers, and this overly simplistic means of evaluation will make them feel objectified in a big way. They will associate that objectification with this tool, and they will avoid it at all cost.