I was already thinking OP has probably flown once in their life and had a bad experience with SW. Before even reading your stats, anecdotally, I go on 15-20 work trips a year so like 30-40 one way flights and Southwest is by far the fastest boarding experience consistently. Just line em up and load em in. No zone loading, no searching around for assigned seats.

The worst is when it's a half full flight and American still has to stick to their loading protocol so it takes almost as long as a full flight, where Southwest it's like 2 lines of people. File in and you're off.