The timeframe for the PS3 to catch up to the Wii continues to fall behind at a rate of anywhere from 5:1 to 2:1 with recent monthly sales. If those ratios maintain, that means 2-5 years for PS3 to match each year of Wii sales, which gets perilously close to the full console lifecycle at some point in the not-too-distant future if sales don't improve. That could justify a 2009-2011 prediction for PS3 even if it starts selling at parity in 2008.