I read a couple of the Twitter threads showing comparisons. Honestly, the original dialog looks super boring. The localizers added a lot of victorian styling. It is a bit annoying as it's more long winded, so it stretches out the dialog that isn't all that great to begin with. But you could argue it's actually better.

I will say I tried to do Japanese voices with English subtitles for two of the battles and it was terrible! The Japanese does not go with a middle ages/fantasy style setting. The English voice actors with the game go way better .. and they're good actors even if their lines could use work. I did a full game review if you're interested:

https://battlepenguin.com/gaming/xenoblade-chronicles-eternights-senran-kagura-shinovi-versus-unicorn-overlord/#unicorn-overlord

It's a good game. The story is actually neat, but it's mostly lore dumps every once in a while. The individual character development isn't the greatest, but the gameplay and tactics are super neat and the art/music are amazeballs.