These are conceptual "differences" that don't actually explain the mechanics of what's going on. For all you know "motivation", "intentions", etc. are also just GPT-like subsystems, in which case the underlying mechanics are not as different as you imply.
That's the hardware it runs on, not the software architecture of GPT. I could equally say that transistors are faster than synapses by the same ratio that marathon runners are faster than continental drift.
