I've used ACW a few times. Sometimes it just flat out nails it and other times.... it's not that close. I was using it to create a few tracks to an original song someone had sent me that I was planning on using BB/RB to create a few instrument tracks.... all I can say is... it didn't even get close enough for rock and roll. I had to scrap everything I was doing trying to get it to work for the last 2 hrs..... and start over entering the chords manually into the grid. That only took me about 15 minutes or so.

In actuality, I rarely have a need to use ACW. But it will work on the vast majority of songs.

You can find my music at:
www.herbhartley.com
Add nothing that adds nothing to the music.
You can make excuses or you can make progress but not both.

The magic you are looking for is in the work you are avoiding.