Well I definitely expect Wii to follow traditional price cut trends. Meaning anywhere from a 30% to 50% increase over the last week of sales. Which means Wii should be in a range of about 210,000 to 240,000 next Wii give or take. Now of course PS3 might be starting to hit a leveling off part or maybe last week was just a "fluke". So I'd assume that PS3 would be in the 190,000 to 220,000 range this next week depending on the magnitude of it's fall. So of course there is a chance that pS3 could still outsell the Wii. Actually I'd say there is still a pretty good chance. Wii may not have traditional trends considering it already is at a particular mass market price and current top brand.
But I'd still give the upper hand to the Wii but PS3 will still be close... unless of course this last week was just a "fluke" for PS3 which I doubt.