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Couple years ago I got opups MEL-HKG-MEL from Y-J as a SG, as did a couple others. It was Xmas time which always helps. I'd expect most WP to fly QF, and the CX MEL traffic is more leisure/family than business so less CX Diamonds. Not yet flown them since making WP.
I had also been doing a bit of long haul J travel with them just before then, CX do track how much spend you do with them, even if you credit to another program.
While the product is not as good as it used to be, I still enjoy them far more than QF, simply due to consistency.