I should have phrased it as a higher ranking rather than a higher number. I assumed 'higher' was clear in the terms of ranks, rather than a larger number.

GP's claim makes it seem like they interpreted as I did.

> ...countries like North Korea (rank #1) are closer to 0...

NK is not close to 0 in relative or absolute slave counts, and I don't see the utility in pointing out that 1 is closer to 0 than 52.