It's a simple test to do. Take two sheets, expose them identically and then process them together in your pyro-based developer of choice. Then, when development is done, place one into a running water bath and the other into stop bath. Then fix them side-by-side and finish processing thme together. Take a color densitometer and measure the density in RGB and VIS density settings. Compare the results.
That's what I did. And there's was no significant difference from my measurements.
What evidence did your experts give?