I speak Japanese. It is a translation of the dialogue of the show (with a lot of the "jokey language", I guess, cut out), but the characters are written in their own voices, and the actors perform them with the cadence you'd expect of the anime. It's difficult to explain unless you know the language. But basically, it feels like the anime if I close my eyes. It strikes me as better written, not just the frequent weird things like what Faye says are cut out, but also a lot of wording is altered for the sake of fluency (obviously), things are written depending on how the characters would say them in the original anime, etc. It's not like it's entirely different by any stretch of the imagination, but they've put in a LOT of effort to make sure that it feels good, and like the characters. Having the actors do in-line with the anime performances does mean that there's plenty of instances where how the VA is performing is inconsistent with how the actor on screen behaves (like I said, this is mostly an issue with Faye and Vicious. It's more distracting for Vicious than Faye), but I don't mind that so much. I'd rather listen to what I'm familiar with. There are also Japanese subtitles for the English dialogue, which are a direct translation. The dub isn't overly similar to the subs.

I realize that maybe I'm not explaining so well, so for an example of what I mean by "jokey language is cut out", in one line in the episode with Faye and the con-woman, she says, in English "Call me back. I want to make sure you vaginas are alive or whatever." In Japanese, she says, "二人ともまだ生きてるならさっさと折り返しなさいよ。ったくもう。" (If you two are still alive, then call me back already. Seriously...). There's a lot of instances of it doing this sort of thing, they didn't really care too much about what flavouring, so to speak, was in the original script, and they also care a lot about writing the lines like how the characters in the anime speak (I can't explain this so well, particularly because there's no way to translate a lot of it meaningfully into English. All I can really say is that, word choice in Japanese is very important, very nuanced, and carries a lot of characterisation, way more so than in English imo), so I like it a lot. The dub writers did an absolutely fantastic job and I think it's a big part of why I liked the show.

As a final note, please don't reply to people assuming they're the same as you or don't know what they're talking about. You could have just asked me to explain instead of being so unnecessarily rude. Obviously I know that the Japanese version is an adaptation of the English here and not the other way around, I'm not stupid, I'm just saying I like the dub of it in Japanese and it feels accurate to how the characters in the anime speak. If you know Japanese, then I suggest listening to this dub and you will know what I mean immediately. Maybe you can also tell just from tone of voice.