I don't know if this rings true to you but for me; use what you use, and as long as it is consistent from session to session and gives me the results I want, I don't bother with it.

You'd need a laboratory and a bunch of test engineers to be even remotely sure about anything. But even then, we are talking about shutter times, developing times, agitation schemes, temperatures, and so on and so forth - all the ways to mess up the ideal, perfect process, from making the photograph until it hangs on the wall. Listen to anyone but choose for yourself.