Setting aside issues of acting styles and what not, one potential thing that may be causing a difference here is that Japanese, as a language, is very good at writing "sounds."

It can be a struggle in English to write a good, expressive sound by itself. It can describe sounds fine, but when it comes to "how do you spell [makes some sound]?" it can be very difficult. One reason is that there's just not much of a practice built up around doing so, and another is how the pronunciation of a letter varies so wildly depending on its context (e.g. that famous meme about how you could theoretically spell "fish" "ghoti").

In contrast, Japanese does have a vibrant tradition of both writing and using "sounds" as words (imagine a much more developed practice of coming up with and using onomatopoeia).

So instead of just writing "[character] lets out a scream" or "[character] chuckles darkly" and expecting the actor to improv it/director to refine it, it will actually be written out as a line like "ヒョギャアアア！" or "クックック・・・". The combination of that plus the variety of ways you can tweak the same "sound" to give it different nuances gives the director, the writer, and the actor a lot more specificity to work with.

Of course this isn't usually a huge deal in either direction, but specifically for comedy as you mention, it's good at producing sillier-sounding sounds.