The QF A380 is turned around in 90 minutes in DXB.
There is a handling sequencing/timing chart for an EK 75 minute turn at DXB, but I don't know if it's applicable to the 380 (nor do I think it's realistic for any long-haul aircraft, but that's besides the point).
Dnata also has the "luxury" of being able to throw an entire army of low-paid workers at a turn, which is not something that can be done at a place like JFK or LAX.
And while it's nice that the ground staff at DXB can turn a 380 in 90 minutes, the QF10 is scheduled for 125 minutes on the ground. QF9 and QF1 are also blocked at 2h00; QF2 is 1h50.