Both Just good friend and Get It never hit home for me and here is my take on why
Both songs suffers from being made in the mid 80's. Now I have nothing against the 80's in term of sound (heavy synthesizers, electric bass, etc) but these songs haven't aged well over the years (esp get it) and sounds extremely dated. Again, that is not a bad thing at all but when you got artists of that caliber you're expecting something timeless. Look at the songs Stevie wrote for Mike like with a child's heart (ok not exactly written for MJ) and I can't help it. Imagine if they did something like I can't help it together as a duet, going back and forth, ad-libbing over each other, real instruments playing and just grooving out. They should have collaborated in the early 80's or in the late 70's. I believe the songs that they made for the Bad and Characters album were too caught up in that era to really stand out on it's own.