Pretty much, they are trying to turn Guitar Hero into Rock Band minus the vocals. Which isn't too bad. I didn't really like Rock Band too much. The instrument controllers broke too easily and I didn't really like the song list and the songs were also too easy. In Guitar Hero 3, I've 5 starred everything (including DLC) except for Through the Fire and Flames and Devil Went Down to Georgia so Rock Band guitar puts me to sleep. Hopefully GH4 will still have the difficulty that GH3 had.