GamesIndustry.bizreports that North American sales of the Nintendo Gamecube have skyrocketed as a result of the recent price cut that took effect late last month. Sales of Nintendo?s Gamecube have since outperformed the PS2 by 20% and outsold the Xbox by a 145% margin. The Gamecube was outperformed only by sales of the Game Boy Advance, which has consistently sold more units than any other hardware system.