A and C. There is something in what you say but I think it is more to do with sensitivity of “foot control”. Driving a car, we are used to light and sensitive movement of the accelerator (and brakes) but we are also used to great boot movements on the clutch. This differential foot control probably becomes hard wired in to us and translates to our flying. I think CirrusF and boofhead make good points too (but not regarding Fred!) on contributory factors.