My last few TATL flights have shown E- with only a handful of empty seats but E+ only half full at T-24. They have all gone out totally full. I did ask at check in on one occasion and was told it was booked full (rather than being filled by misconnects) but that most people do not reserve their seat in advance, so what I was seeing on the screen was merely those who did so and those who had had it done for them.