The G&C International Frigate was a completely new design that had a Burke forward superstructure grafted onto 1 deck of the design rather than having to redesign wave guides for the radars etc. No detail design had been done, while it's final displacement and length had not been fixed and major errors were actually discovered in the types weight calculations. Its final iteration was actually as large as a DDG 51, but still less capable.Look back to the AWD project. We wouldn't even accept a slightly modified Burke because of the risk. Althought there was a already in service ship in the F-100 design.
Given the choice I do wonder what will be chosen. IMO I can't see them going with something with only 2 diesels as it would be a significant decrease in capability. IMO I think that was the greatest capability Collins offered over every other design. Real snort speed and range. It puts Collins out in a weird little group by itself.
All the quietness, sensors, price means nothing if you can't even get to the area of operations.
Evolved Soryu or 216. As others have pointed out it will most likely come down to commerical and build program more than technical capability.
Japans Kongos and South Korea's much larger and more capable KDXIIIs have more in common with FlightIIA Burkes than any of the G&C International Frigates. In hindsight the"Baby Burke" was the wrong Evolved option and it's failure gave the Existing option the inside run to selection.