This thought struck me after posting a Ka-Band V1 vs RX65 test in the Review section last nite.
Even if testing an old V1 vs a new V1 on Ka, you need the Tech Mode of a Belscort to determine the frequency, if you cannot visually confirm the radar transmitter being used. And in many cases you're not going to have access to the LEO equipment. Obviously you would want to keep the unit that is best against the Ka radars that you face the most.
It would not be impossible, that in a heads up V1 vs V1 comparison, that one unit would be more sensitive than the other in a particular portion of the Ka-Band, as has been demonstrated in previous tests.