Seed plants seem to be much more robust in their growth habit
I’d be willing to bet my entire reputation that this is directly related to seed borne microbes. Above ground plant matter doesn’t contain the same microbes as those in the medium. When we take a branch from above ground we lose all of those microbes working in the soil.
You still get the microbes that work in the plant, above ground, and in the light but you lose the entire ecosystem in the medium. You could probably offset this by going into the same soil and adding an extra couple weeks, but that sort of defeats the purpose of going with a clone to begin with.