As another poster mentioned, sales is very performance oriented. Either you make your numbers, or you dont. This sounds like a bad way to hire, but actually it

As another poster mentioned, sales is very performance oriented. Either you make your numbers, or you dont. This sounds like a bad way to hire, but actually it works very well and is fair. Also, per your own example, they ask you about theory questions. This is, in some sense, a job-sample test. Many developers are asked to write code during an interview. That is a job-sample. Salespeople are often asked to sell something arbitrary. Job-samples are VERY valid predictors.