Keep in mind, CX SL and BA SL are not the same tier. I would say the CX SL is the same as BA Bronze and CX GO is BA Silver. I have found that the tier points being offered by BA and CX are somewhat similar give or take depending on fare class but for the most part, if you're going to hit 300 tier points on CX, you'll probably hit 300 on BA.

As CX gold (OW Sapphire) and BA Gold(OW emerald) are not the same tier level, what is you basis of getting one or the other? :confused:
And not the same level on either airline? e.g. OW sapphire

OW Ruby = BA Bronze = CX Silver
OW Sapphire = BA Silver = CX Gold
OW Emerald = BA Gold = CX Diamond

https://www.oneworld.com/ffp/my-oneworld-tier-status

Was CX Gold and now BA Silver
What makes BAEC difficult for people based in HK will be the 4 sectors required.
(Can consider BA SIN-SYD-MEL/BNE etc which can make 4 sectors)

I am based in London/ HKG and have now shifted all my earnings from MPC to BAEC after the MPC change. I have just secured my BA GO (OW Emerald). If i put all my earnings in the past 12 month to MPC, I would be CX GO (OWS). My flights are mostly PEY for LH with plenty of Y short hauls and the odd longhaul J.

As previous posts have pointed out, you'll need to have 4 sectors on BA qualifying flights, which could be achieved on IB as well, as well as BA/AA codeshares for Atlantic crossings (obviously have to be booked on a BA -125 ticket).

Note though, Avios 50% tier bonus only applies to BA/IB/AA/JL but not CX. If you're flying CX a lot, you earn pretty much the same Avios as you would in Asia Miles (distance based x fare class multiplier).

Just did LHR HKG yesterday in W on CX with my newly qualified BA OWE status. Was treated super well, as well as CX DM in the same cabin. No opup, but wasn't expecting one anyway. BA is generally alright at dishing out opup ex-LHR on longhaul flights, esp on some of their newly refurbished 'super high -J' 744. These planes have close to 90 J seats and I have scored W-J upgrades every time i've been on that configuration.

If you're do fly between Canada - US, those short haul redemption flights require much less avios than you would with Asia Miles.

Obviously other factors to consider, but for me, BAEC trumps MPC any day now.

It looks like the OP is well aware what Oneworld tier each of the relevant BAEC and CXMP cards translates to. What he/she is asking is, given their travel patterns is likely to result in either (a) BAEC Silver / CX Gold or (b) to BA Bronze / CX Silver, which of the options within each of the a and b variants are superior.

Not sure if you typo'd but the combos under consideration are BA Silver vs CX Silver or BA Gold vs CX Gold.

Ah yes - sorry, typo!

TMT