That's the main substantive difference. I think there are differences in flavor considering that these came from rather different literatures. I have a feeling they'll converge.

State-based CRDT involves sending the entire document model, rather than just deltas from the last state. That's fine if documents are small or deltas are big chunks, but these tend not to be good assumptions in text editing. On the flip side, they're easier to reason about because connections don't have to be stateful.

There was a paper recently about delta state CRDTs with the relevant code. C++ code for reference https://github.com/CBaquero/delta-enabled-crdts