The game's beginning setlist is woefully small, the drums are incredibly broken and the main game is incomprehensible
Unfortunately my friend bought the full Power gig set. And In short, the game's main "quest" is so repetitive and unnecessarily complex that it just immediately sucks the fun out of playing songs that are entertaining. Not to mention the fact that you have to play through it as almost all of the songs (with the exception of about 15-20) are locked when you first play the game. And these first few songs you will be playing over... and over... and over for the beginning of the quest.
Now, onto the instruments. As a drummer I of course tried the drumset and in short it doesn't work, at all. It double "hits" (not sure what to call it since you don't actually hit anything) multiple pads will go off at random times and the pedal is just god awful. Upon plugging in my Rock Band drumset it was far better to play but the note chart took some getting used to (no depth to the note board like in RB and GH). And even once you did, some of the charting was just completely off. In multiple songs you'd hear a fill, but they were too lazy to actually chart it and instead you just continue playing whatever beat you were playing before as if they just copy and pasted the whole thing.
I wasn't able to try out the guitar, but my friend was extremely disappointed in it both from a real guitar and a game guitar perspective. So needless to say, steer clear from this game. Though in ways this is better than Rock Revolution this was far more of a let down. This game had a great setlist (without the god awful covers of Rock Revolution) but due to the laziness (or perhaps inexperience) of the game programmers, this game's setlist is now sadly going to go unplayed.