Not fair, Not fair!
Superfine Dry Fly Dubbing (to give it its full name) is treated before you buy it. You are comparing 3 untreated flies with one that has floatant on it already.
Could you also explain the tying process by which you get "all things equal"? I've been trying to achieve this for years.
Recently I've been tying tiny olive spinners for a customer. CdL tail and poly yarn wings with just a thread body. To get the colour I apply brown cobblers wax to Lt Cahill Uni thread 8/0. Is this a floatant? A side effect of it is stopping the water soaking into the thread.
To borrow a phrase from Hans, "Running and ducking."
"Political correctness is a doctrine, fostered by a delusional, illogical
minority, and rabidly promoted by an unscrupulous mainstream media, which
holds forth the proposition that it is entirely possible to pick up a ****
by the clean end"