For poorer travelers, I can honestly say that SQ J on A380 is better than QF A380 J. The seat configuration on SQ is 1-2-1 compare to 2-2-2 on QF. The SQ new J product is the widest, I had my partner sitting with me cuddling whilst enjoying "Transformers" and sipping hot choc comfortably.
The service from the SQ was fast, efficient and invisible. I couldn't remember seeing them top up my drink or clear away the rubbish... I never went without a full drink on the holder...
QF wise, the crew seemed to expect the pax to go and serve themselves. When the lights got switched off, so's the service.
Note: That was just my observation and opinion.