Forgot to quote the more important parts of the article
"Even more importantly for Sony, however, is that the marked increase in Killzone 3 pre-orders has been matched by a sudden jump in sales of the 160GB version of the Playstation 3 console. The console has seen some aggressive promotions lately, most notably by specialty retailer GameStop, which did spark a measured increase in demand. Data for the current week is not yet complete, but early indicators show that the console saw a sudden spike in sales beyond the previous promotional increase - just as Killzone 3 pre-orders spiked around the launch of the open beta."
But erm, you guys are probably right. I mean I didn't expect the game to do significantly better than KZ2 (I think KZ3 will top out around 3m sales). Which is why I thought it was a little weird it seemed to be selling systems, as the article suggests.