Not a lot.
Harmonix’s hope that low sales of Guitar Hero: Warriors of Rock were caused by anticipation surrounding Rock Band 3 have been dashed this morning by official UK sales figures.
According to UKIE, Rock Band 3 sold just 7386 units for the week ending 30th October. That breaks down into
5318 Xbox 360 copies, 1555 PS3 copies and 295 Wii copies.
As a result, Harmonix’s tour de force spent a debut week at 26th in the UK all-formats top 40. Rival Guitar Hero: Warriors of Rock finished one place below in 27th.