[angstrom]

It's possible your sample is not representative of the larger sample.

My understanding on this matter is Amazon is going the way of giving the brand owners more control of the brand as one part of the solution. Ultimately they know their product(s) the best and are likely most aware of matters no heuristic is going to catch. Maybe it can be used to train an automated counterfeit identifier since this solution only scales for large brands that have resources already dedicated to the problem. You still get stuck with a McDowell's vs McDonald's problem of brand erosion from very similar knockoffs that tread the legal grey line.