Yes, it is materially different, and they tackle wildly different problems in different fields, with again wildly different sensing and control interfaces, diff

Yes, it is materially different, and they tackle wildly different problems in different fields, with again wildly different sensing and control interfaces, different uncertainties and challenges, and unbelievably disparate levels of required training, certification, and competence for use. The desire to name it "autopilot" stems from a desire for positive marketing, not a desire for technical correctness. (And certainly not from a desire to accurately convey limitations to users!)