Hello,
Thanks for your interest. 🙂
They are quite different indeed and depends on what you are after. NodeCanvas is best suited for AI behaviours, while FlowCanvas for event based logic. I would say that NodeCanvas is more all around if you are starting out, since it includes pre-made actions, while with FlowCanvas even if it’s more versatile and flexible, you need to actually visual script your “actions”, thus it needs a better understanding of Unity and basic progamming logic than NodeCanvas does.
Let me know if I clarify the differences better.