I have not used the game Warriors of Rock, but I used the guitar with Guitar Hero 5, and I can tell you is that the guitar is of poor quality, especially in the pick makes lots of noise every time we pressed to play a note. Moreover, I have found some difficulties in communication between the guitar and the playstation, making me miss a few notes.
I had the opportunity to play with the guitar sold in the pack Guitar Hero World Tour, and I can tell you it is better.
