Smoother/quieter than the 787? I haven't been on either but thought that the bleedless engines and everything-electrical would make for a quieter ride.
Selection bias? Try—
"Because the A380 is the top level equipment operated by the carriers, pay scale for pilots is greatest. Ergo, they are flown by the most senior crew; since practice correlates strongly with proficiency these pilots have a higher rate of grease jobs." (1)
(1) Grease job = industry lingo for a buttery smooth touchdown, aka, "painted it on." :-D