Well there are no indications of any slowdown in the West. The Wii's situation in Japan is not something new, end of 2008 until release of AC was quite slow overall, as is the situation of all home consoles in Japan.
( I mean 3 combined selling around 45k a week is weak imo) all being were based on Software releases. Wii does need big software there (WSR, MHIII, TALES, Gunadm are coming), and it will be back on Top selling more then opposition combined, PS3 have been on top by few weeks but its not like some sort of Wii disaster.
There arent that many big releases in the West as well from Nintendo or 3rd parties at the moment (compared to what HD twins got) but like i said it does not affect the sales of the console especially in NA. Therefore i think there is no real chance for some kind of Wii slowdown in the West.
