Are you adding that “it doesn’t mean it was less physical…” or is that what he says? The Sifsei Chaim doesn’t speak about the whole world, just Adam HaRishon and it was me that was drawing the parallels to the briah. This is what the SifSei Chaim quotes from the Ramcha”l:
…and you’ll see that the gufniyus of Adam before the cheit was at the level of ruchniyus that he has now (after the cheit). Go and think how his ruchniyus was…because just like we see that his gufniyus of then (before the cheit) was like the ruchniyus of now…
This is what the Sifsei Chaim adds:
…At every level a man is made up of a guf and neshama. The essence of both of them is according to [each person’s] madreiga. When a person goes up to a higher world then the body of the new [higher] world goes up the level of the neshama that was previous.
He brings a number of times throughout the perek Chanoch, Moshe and Eliyahu who were mezakech their gufim so much that they were able to go up to shamayim in them. It is easier for me to understand that their gufim became dakusdik like ruchniyos through their aliyos than that their gufim remained actual gashmiusdik gufim like mine that then went into the purely ruchniyusdik place we call shamayim.