KZ2 remained no1 on european charts for 2 weeks and 3 weeks in some european countries. not even halo 3 on x360 could remain on the no1 chart for more than a week
SONY hasnt revealed KZ2's offical sales
but it is definitely around 1.5 millikn in just europe by now
also x360's stellar lineup so far race pro = gt5 killer halo flop = WOW killer so4 = HD glory at 510p . mega hit in japan and WW . 1m sold in japan on x360!!