That's a pretty meaningless ABX test. You don't need to prove that you can't distinguish a encoded file from the source.I apologize if someone felt embarrassed by my posts. It was not on purpose. I'm new to this forum and I do not know the procedures very well. Others have posted spectrograms and have not been admonished for it. They are only indicative, OK, they do not have scientific value. But as you can see from the posts of others, nobody knows all. I thought the forums were for questions, discussion and exchange of ideas, I do not think they are canonical churches with rigid rules like "forget it and stick with the default settings."
What you should be doing: Post an ABX where you successfully distinguish the (in your opinion) inferior Mp3 with default encoder settings and same bitrate from lossless source. Then you should do ABC/HR tests to show that you can distinguish the two Mp3s from each other and that you consistently rate the one with your snakeoil commandline settings as higher fidelity.
I'm trying to find a combination of settings in LAME to get a .mp3 as transparent as possible, regardless of size. For storage on android. Maybe it's silly what I do, I do not know, but it's worth trying. I'll complete the analysis with the evidence suggested by Deathcrow, which I thank, and let you draw the conclusions. Thanks for understanding and patience.