I think the slowing economy works in XB's favor (relative to PlayStation) because they have the lowest price current generation console, by a wide margin. And unless there is a serious crash where people cut out all entertainment expenditures, a slowing economy is not particularly bad for gaming. Gaming is a low cost entertainment option. It's cheaper than damn near everything else. So, people can trade down to gaming from other options, and people that are tight on cash are more likely to choose the lower price system.
Mid to high 80's for Xbox is where I'm at. As far as economic issues, I don't think an individual is going to pick one over the other based on a hundred or so bucks. It's always going to be about the games. If Xbox ain't gonna bring it, then they are fucked.
...to avoid getting banned for inactivity, I may have to resort to comments that are of a lower overall quality and or beneath my moral standards.