There's stats across several different XBLIG, along with analysis, from one of the top XBL indie game developers at: http://radiangames.com http://radiangames.c

There's stats across several different XBLIG, along with analysis, from one of the top XBL indie game developers at: http://radiangames.com http://radiangames.com If you read his most recent posts, it appears the recent XBLIG spamming of ratings (which lowered average game ratings across the board) has cost him huge numbers of sales - enough so that he's now looking at other platforms.