This does not surprise me at all. I have never seen an A380 land smoothly. Never. On YouTube there are already lots of videos of A380 hard landings.
Last week after landing at JFK, I witnessed an Air France A380 land on 31L abeam our position. Granted the winds were crossing the runway and gusting, the AF "super" had a very hard landing, and then a hop and a skip. The wing flex and resultant sine wave like motion that imparted through the wing looked awful.