But I think it works ok with those because its about 13 hours in each direction, so you can't complete a rotation in under 24 hours anyway.

DXB - YYZ departs 0955 arrives 1450 and YYZ - DXB departs 2140 arrives 1935 +1

I initially thought they might use it on the JED run in the downtime, but that flight departs at 1640. I'm not sure why the turnaround in YYZ is so long - if they got it back sooner they might be able to do something in the 5 hr range (MUC/ FCO perhaps?)

ETA: Also, you only need one A380 on YYZ, but would need two for 5x weekly NRT, and I don't see them upgrading some other route to 2x weekly A380 and 5x weekly 77W.