I think SOME could discern a difference, but if you test 100 people blind, I think in aggregate you'd end up near 50-50.
I used to do blind tasting of wines, all cabernet say, ranging from $5 to $50 a bottle. My "panel" could not much rank them, they were different, but nobody got the order anywhere near correct, including me. A couple ranked the $5 highest on their list, admittedly I got it on a whammo sale half price.