Just use one file you can't hear a difference let say MP3 320kbps vs FLAC and run the test in the above procedure. Since there's an upgrade maybe it will affects the results.
Note that the first goal of this thread is to train your ears, not to bust myths (that's the bonus for those who want)
Even if it's flawed in the end most people accept that what they hear is flawed (and won't even participate), so It won't hurt to add something more. I think it's healthy to have both sides of the coin. This procedure, at least, gives you the opportinity to try at home, alone, relaxed, with your favorite music, etc. If AK wants more young people maybe it's time to try something different!
Don't feel that you still need to debate here, your position is clear and welcome, but it leads nowhere to keep adding. Again give me links that I can add in post #5 and I'll add them with pleasure.