Guess vortex will just be HEAVY there can't be much between the A380 and those big antonov monsters. I presume wake problems vary with the wind etc, got some really nasty wake vortex running into lambourne in a 319, we were following a 747 and it was about 8 miles ahead, en route vortex sep is supposed to be 5 miles in that situation but we took a hell of a bump.