Can a 120 lbs punch do more harm than a 240 lbs one?

John Cooney (1996-2025) - 130 lbs
Shigetoshi Kotari (1996-2025) - 130 lbs
Hiromasa Urakawa (1997-2025) - 135 lbs

With Ginjiro Shigeoka (105 lbs) also fighting for his life, there's a question lurking in my mind: putting weight cutting aside cause that's still happening under 200 lbs and looking at the stats that it's usually much lighter fighters suffering brain bleed & other life threatening conditions – is it possible somehow that a 240 lbs punch landing on a 240 lbs body causes less direct harm than a 120 lbs punch landing on a 120 lbs body?

The smaller and leaner the body is, the less muscle mass & body fat is there to dissipate the force and anyone under 140 lbs is usually skinny looking with or without weight cut with Tim Bradley style muscles only appearing at or above. I dunno, this question is just something I'm keep coming back to, too many heroes are dying at lower weight classes and it cannot be a coincidence this is more prevalent there.