My reading of the OP is that the numbers are award co-payments. Not just YQ. In fact those number would include all additional charges YQ, APD plus whatever. I also didn't read the OP as being about avoidance of particular surcharges more about which airline has the lowest award co-pay on any given route.
My reading was that since the name of the thread was
YQ - Master Thread, the focus was more or less on fuel surcharges, not the entire co-pay in general.
This makes some sense as since everything else but YQ is pretty much set (by governments, airport authorities, etc.), fuel surcharges are up to the carrier and frequent flyer programme (i.e. whether they charge them on awards or not, and then how much).
There was an inherent ambiguity in whether the OP was referring to flying those respective airlines listed or redeeming through their respective FFPs. I guess since the OP said that they were the targets of transferring points to those programmes (I didn't know LH or QR were Australian partners), then the assumption should have been the latter, and further then it was a redemption on those respective carriers through their host programme (except for some exceptions like VA, which doesn't fly to LHR, so the nearest equivalent would be via AUH and onwards on EY).
I was indeed talking about the "add-ons" which airlines choose to charge, not just YQ. But let's face it, they are just cost mitigation, dressed up as fuel "surcharges"
There's not many other "add-ons" which carriers charge apart from YQ which are also not charges that must be paid to governments, airport authorities etc.. For example, carriers add on passenger service charges, noise mitigation charges, UK Air Passenger Duty (where applicable), poverty reduction contributions (where applicable), etc. to your co-pay, but (at least theoretically) these must be paid to authorities, not kept by the carrier, and the latter certainly doesn't set these levels. So if you really want to be insistent, they are a "cost mitigation", but not one necessarily completely borne by the carrier; this kind of insistence would assume the premise that an award ticket should be miles only with no cash to pay at all. The only true "cost mitigating" charges are fuel surcharges.
Anything else is not normally found in the fare itself and is charged as a separate fee. For example, credit card surcharges, ticketing fees, etc.
It is quite rare to find any frequent flyer programmes which offer award travel which is completely free of any co-pay, including government/airport authority/etc. fees and surcharges. The only exceptions which come to mind are SAS EuroBonus (I assume they still have this), and BA Executive Club Flight Saver Reward (the co-pay is fixed per redemption region level and not affected by the actual amount of surcharges).
VA don't add much - ($380 sounds OK)
For a return SYD/LHR booking via AUH, it is about $460 - $480 or so - the $380 only covers the inbound sector from LHR. That would be about the same co-pay whether you redeemed on the FFP of VA or EY, and irrespective of the combination of both of those carriers flown. That number is, of course, just the necessary government and airport etc. surcharges and fees - VA and EY do not pass on fuel surcharges on awards.
A good estimation (or pretty much dead on quote) of total surcharges can be obtained not only by dummy booking on the relevant FFPs' sites, but also through putting in the specific carriers and routing into ITA, then analysing the taxes, fees and surcharges at the end (for the carriers or FFPs which don't pass on YQ, just exclude the YQ or YR lines as applicable).
