It looks like all the input/output is proprietary Drama stuff. Framer lets me paste in content designed in Sketch, or import production components we've already built in React. The end result of a FramerX project can be exported as a static webpage you can do whatever you want with (host, A/B test, embed).
A designer can start designing a component in FramerX, and I can later add the logic while retaining their styles/animations/interactions. Then we can pull that completed component into our component library, which can then be used in production and imported into other FramerX projects.
I can't critique anything they show on their website, and the results look great (any attempt to make interaction design easier is a godsend), but right out the gate as a web guy it seems like a big disadvantage even if it outshined FramerX as a general interactive prototyper.