How about adding a column in the game sales that divides the total total game sales by total console sales for that region to give a percentage of how many games per system were sold.

For instance, if you bring up a list of  all games for the Americas region, the list will contain the total sales and a column with a percentage of how many console sales equated to software sales.  Wii Sports would have a 100%, Halo3 would have a 50.78% .. etc

Good idea

Someone asked for someone to put together an attach rate for the releases this week which is the same thing you are asking for. If you check the other post, I posted a list of the top 10 releases last week based on the percentage of system owners that bought the game.

http://www.vgchartz.com/forum/thread.php?id=10452&start=0#end

Well then, all the more reason to have it...

Wow Kane and Lynch in the top 10.

I'll post it again here

1. (WII) Super Mario Galaxy - 751,322 units (11.98%)
2. (PS3) Assassin's Creed - 226,177 units (9.32%)
3. (360) Assassin's Creed - 585,064 units (6.82%)
4. (WII) Resident Evil: Umbrella Chronicles - 128,109 units (2.04%)
5. (PS3) WWE Smackdown vs. Raw 2008 - 48,712 units (2.01%)
6. (PS3) Need for Speed Pro Street - 47,905 units (1.97%)
7. (360) WWE Smackdown vs. Raw 2008 - 129,554 units (1.51%)
8. (PS3) Kane & Lynch - 32,601 units (1.34%)
9. (360) Need for Speed Pro Street - 109,748 units (1.28%)
10. (360) Kane & Lynch - 93,147 units (1.09%)

Keep in mind that the list is made up of only last week's releases. After Kane & Lynch the PS3 had Beowolf, the 360 had the same plus Blacksite, America's Army, etc., and the Wii had a handful of other games that had decent sales but nothing spectacular.