Interesting post on traveling in Y with SQ and CX.
I can see where on SQ there is a significant difference/gap between the Y traveler and premium cabin one. I will say as a PPS, I try to get just enough booked to reach that 25K level in F and (mostly J) to stay at that level. The rest, I try to put on CX since I am flying across the board with (Y for short hops on CX 2 hr flights out of HKG, J for 3+ hr flights and rare occasion...F) my OW AA number to get the benefits as with SQ, there is no real benefits riding in the back.