(small note: PLEASE change that from a code box:
Like this.
to a quote box:
Just saying.)
I really don't know, but I think that there's a few special things to consider. The first is the Shard dynamics involved. The unique effect of Endowment (and any companion Shards in the neighborhood) on the people of Nalthis has created Awakening as a magic system. Obviously, no one on Roshar is an Awakener, otherwise we would see it. But could a Rosharian, interacting with a Nalthisan, give away a portion of their soul as a Breath? Maybe. It depends on whether or not their SDNA in that regard is compatible, whether BioChroma is something unique, and not just a portion of the existing soul that has a way of being siphoned off.
One test I can think of is whether or not someone with only one Breath has slightly higher than average attributes, specifically those obviously granted to those with large quantities of Breath, than someone from Roshar, who has no obvious Breath to give away. If so, then yes, BioChroma is a specific product of the magic system.
The quote you're referring to really refers to more locally based systems, like AonDor, where Awakening on another planet is just a matter of bringing Breath with you.