I just had a look through Carfield's photos on the catering of CX on his flight from JFK-HKG. It confirmed my earlier experience this year to HKG:

1) Small portions
2) Food presentation = bad
3) the Quality = average (especially the Dim Sum and noodles)

Please take some time and have a look.

I can post some of my past pictures and the conparison is evident on the deterioration!