It should just mean that the sales for the equivalent period are smoothed out over 3 weeks instead of 2.  It might mean a smaller peak than anticipated in week 8, but I think the Wii might be an exception to that due to supply being its limiting factor and not demand.

Week 6: The Battle Evolves Yet Again

• 360: As predicted by most all consoles are down this week in their worldwide total and equally expected is the fact that this drop would occur in the NA region.  Interestingly though the 360 still manages to surpass its NA performance from the year prior and for the 6th straight week more than doubles last years EU numbers.  Even Japan is about even this week (not that it makes much difference for the 360).  This continued strength after the week of Black Friday would indicate that the 360 should easily continue this strong performance through the rest of the holiday and probably finish above the majority of predictions made prior to November for the end of the year.  Regardless of how things play out the 360 should easily pass the 25M mark next week! 
  
• Wii: The Wii similar to the 360 has seen almost a doubling of sales in the EU and NA also remains very strong this week as well.  The JP numbers are down YoY but again this has more to do with the state of console sales as a whole in JP than anything else.  Just like the 360 the Wii is expect to continue a strong holiday performance and in two weeks time we might be seeing a new single week record for the most sales on a single platform, and with the numbers for this week claimed the title for fastest console to reach 40M units sold!
  
• PS3: With the PS3 down YoY in EU, NA, and JP this week it seems to be unfortunately well positioned to finish its uninspiring holiday run.  We can blame the situation on anything from price to economic issues and we can point to the recent layoffs at Sony in the hope that they are trying to correct it.  But the truth of the matter is this trend is likely to continue through the rest of the holidays and probably into the early part of next year until a price drop or some sort of bargain/bundle is offered to get people interested again. For now the only race the PS3 is in is the one to reach 20M before the end of the year, and while I'm still optimistic it can reach that goal, it is sadly no longer a "sure thing", which I likely would have insisted it was 6 weeks ago.
  

PS - Feel free to leave your predictions, questions, comments, critique, ideas, etc...