Microsoft must sometimes feel like its lead in the game market is a Pyrrhic victory. The Xbox 360 once again topped the NPD Group's hardware charts in July, claiming a near-majority 49 percent market share of consoles -- but the 203,000 units sold were a steep drop from the 257,000 units that traded hands in June, and a far cry from the glory days that would have given a victory more meaning. Nintendo and Sony haven't shared their own figures,