Ok if anyone reading this is suffering all this technical anxiety, and about to embark on changing profiles etc I would strongly recommend doing yourself a favor and what I did and take your laptop to your Apple store to directly compare them yourself.
We know that there are technically measurable differences, but I literally couldn't see any difference between the 3 panels on viewing them. Some here have said the same. Then others say the observable differences are stark and then proceed to go into technicalities.
Or, import a profile and try it. With one click of a mouse, you can always change back.