I think you misunderstood, abhorrent means disgusting, loathsome, terrible etc. So he’s saying Japan’s criminal justice system is unconscionable just like the US, not that they are equally bad.
I think you're actually misunderstanding what david38 and Retric are discussing. They're saying they're in agreement and that the US and Central America are similar, but not "equally bad".
I actually think you're all misunderstanding what you're discussing.
No, I won't expand as to why, I just wanted to continue this alleged misunderstanding train.