These sorts of things are usually not done unless the outcome is known beforehand. An exception would be if the A-10 has enough political clout on its side for the contest not to be rigged in favor of the F-35. However, considering how much money has been put into the F-35, how much money is still to be put into the F-35, how government works (i.e., "Help us out, and there is a high-paying job waiting for you after you leave the Pentagon or Congress" is known to all), how many careers would be ruined if the F-35 program were to be terminated, and I give it much higher odds that the F-35 "wins". For example, if you consider that the conditions will be such that a non-stealthy aircraft is often shot down before delivering ord, you know that the F-35 will win.