I thought the same thing when I got this program in December. I now know differently. They both do things that the other doesn't. I find th BIAB is perfect for fleshing out the structure and chords and such. I then use RB to fine tune things and add audio tracks and such. I then take those files and put them in my DAW and work the final mix ( which to me is the hardest part) The reason is that each program that I use, just like each keyboard that I use has its own strengths and weaknesses. Do some exploration of RB and you will learn those strengths. In my opinion while this program isn't perfect it is pretty darn good and the responsiveness of the company that makes it is exceptional.