FLEXPWR, the flare and landing in an A320 is almost the same as the 73NG but doing the same in a widebody is a different story.
I suspect that a straight conversion from an A320 to A380 might be politically unacceptable at some airlines, but I was once assured by an A380 check n' training captain that most of the controls on the big beast would be very familiar to any Airbus pilot.