Big Apple Sewer Samurai Race Creation

I keep reading this and the numbers just don't add up to me.

In this book the races have a custom rating which caps the negative racial ability points.

In Sewer Samurai if you are an Alien or a Mutant you can choose a racial package that includes a bunch of abilities and clearly says if you take racial package you don't get further custom rating adjustments. That's fine, but then I'm looking at the racial options and the math doesn't seem right on some of these races.

The Cat mutant has 11 positives offset by 3 negatives total of 8 positive - which fits the 8 free points rule.

The dog mutant has 8 points of positives and a -2 negative trait.....for a total of 6 positive?

Is this confusing or am I just stupid?