I thought Malaysian were selling their A-380's? (One careful owner, never raced or rallyed...)
For me about the only thing better compared to a 777 is they ARE a tad quieter. In Emirates the space in Economy is about the same as their 777's. The A-380 does seem to get bounced around a lot more in turbulence and disembarking from up the back in Economy is a pain, so stay forward if you can.
Another advantage (with Emirates at least) is the raft of unsold Business Class seats upstairs means frequent free upgrades for the Gold and Silver FF's.