I think PS4 might take 1 or 2 more weeks, then unless Sony is having severe difficulties with the supply chain the gap should level off & start to increase.
Hi @HigHurtenflurst you were correct, the PS4 did manage to stay ahead another week.
The gap is now at 190k this lead is enough to last the PS5 a few weeks, so maybe by then, the stock issues will improve and it may never reach negative values:
Now with the bet for this thread, I think things are complicated. There are only 3 weeks left in january, so it should be hard for the PS5 to reach very good numbers:
The first week was very similar to what the X360 sold the first week, so if that trend continues, it should sell close to 500K. Personally I don't think it should be that low. The PS4 sold 689K so hopefully it will be closer to that.