Ok thank you FlightDetent. But I don't know if you flew on the very old A321-100 and some -200 models with the wingtip fences: The flare is quite challenging and scary when the speed is only 1 or 2kt above VLS. Maybe it was a problem with the flight control computers but they were famous for hard landings. xD The one with Sharklets on the other hand, increasing the VAPP is looking for a very long flare. They are good gliders.