Todjaeger
Potstirrer
There is a bit more involved in why countries selected the tanker they did.It is indeed a remarkable assessment. On many points it is obvious that in reality the A330MRTT has the most positive result.
Yes, the A330 has a higher MTOW, but it also has a higher fuel storage capacity, 111.000 kg compared to the 96.000 from the KC-46.
And like you said, GMF has decades of experience with the A330. The 767 was never used by any Indonesian airline (with exception of wet leases of umroh/haji flights), the A330 is in use by Garuda Indonesia, Lion Air and in the past also Batavia Air.
Besides that IPTN produce much more parts for Airbus aircrafts than for Boeings for many years.
"Unit costs KC-46 US$ 150-250 millions" : That unit price is based on a contract between USAF and Boeing for 19 KC-46A. Well, you don't have to be a genius to understand that if TNI-AU (a non-Western and non-NATO air force) orders a much smaller amount from Boeing, the price will be substantial higher.
The A330 has a higher ceiling and a superior range compared to the KC-767/KC-46.
Specially if we look to the “Tabel 5. Tabel Kriteria dan Bobot Penilaian”, it seems it is made incorrectly by purpose. Like somebody get paid to do so.
Even many of the most loyal allies of the US, choose the A330MRTT above the KC-767/KC-46, and that is not without a reason.
Aside from different countries having different requirements and conops, a major consideration was that a number of countries had tanker replacement or acquisition programmes which were running ahead of the US tanker programme, no thanks to corruption between Boeing and personnel in the Pentagon, which was quickly followed by legal challenges first from Airbus, then Boeing IIRC. Ultimately the whole selection process had to be scrapped and re-started, which led to the new/re-started US tanker programme making a selection in 2011.
That selection date, being in 2011, is significant since that is about seven years after the A330 was first selected (by the UK IIRC) as the basis for a MRTT and two other nations had also selected aerial tankers based upon the A330 airliner before the KC-46 was selected.
From my perspective, the higher fuel carriage and offloading capacity of the A330 is not really the advantage most would think, since those numbers are already going to exceed the max fuel capacities of most military aircraft in service. It would take something like a C-17, flying with nearly empty tanks, to really start seeing that capacity make a difference.
When getting into discussions on in-flight refueling of fighter/strike aircraft, that fuel capacity difference might permit a few more aircraft to be refueled by a single tanker, and/or a tanker possibly loitering at a slightly more distant station. Some of it is honestly hard to estimate since the A330 MRTT is a larger and heavier aircraft, and would therefore most likely burn more fuel to fly a given distance and loiter there.
I suspect that one of the reasons why a number of countries have opted for the A330 MRTT, after the KC-46 selection had been made by the USAF, is due to either the amount of workshare the country placing the order could get, or the level of participation with Airbus that was already underway with the countrys' aerospace industries. Another consideration for a number of countries would likely have been that Airbus had examples flying, while Boeing was still working out some of the details of the KC-46 and did not have an aircraft in the air.