[Autumn]

No its just that they have the same potential. Different flavors of the same variety, Muddle is a potential that is shared among 4 weapons currently, and potentially even more in the future, the Gunsmoke Spiritual set and the Hayabusa set both have varying star levels, making it so that the Gunsmoke spiritual set would require less chimeric eyes to unlock than Hayabusa, this could be a bigger difference in the future if anything else got muddle.

You're just going to have to mainhand whatever dagger has the potential, its encouraged through sentimentality even.