MAN cannot manage 2 when needed
I believe this comment is a little unfair. MAN do manage two runways and some may say very well. The point is why is there restricted use of 2 runway operations.
I believe it has nothing to do with economics but entirely due to permission to operate 2 runways during specified time periods only.
Incidentally, I understand the EK A380 uses only 23R or 05L (Runway1) irrespective of traffic pattern at the time.