It looks like someone else thinks like me and made a better relative YoY chart than I did:

It uses NPD data rather than vgchartz data, but the trends are mostly the same.
360 seems to be somehow managing to be flat on that chart. But the end of it shows what I was saying to theprof in this thread, that while the PS3 is currently up YoY you can see it's relative YoY percent is declining fast. GoW will of course help but it'll reach the zero mark in the months after. Of course there's supply issues at play here, however we only know of that in the US and the same trend has been happening in vgchartz worldwide data.
A game I'm developing with some friends:
www.xnagg.com/zombieasteroids/publish.htm
It is largely a technical exercise but feedback is appreciated.







