I’ve flown both American Airlines Business Class and First Class, and privacy was the biggest difference I noticed. On a long-haul Business Class flight, I had a pod-style lie-flat seat with a divider that made it feel very personal, even when the cabin was full. First Class felt more spacious, but also more open, with less separation between seats.
I actually had to choose between the two after a flight change, so I called 877-932-0034 to understand the layouts before confirming. From my experience, Business Class usually offers more privacy, while First Class focuses more on space and service. It really comes down to whether you value seclusion or openness on a long flight.