Note DS and DSi are shown separately in that list, so VGC will have the DS(all) over the PSP by a decent margin. So it's really situation normal in the handheld market.
It would seem that PS3 and Wii will be tracking evenly for the foreseeable future and only in the week or 3 after a major game release will the benefiting system get a significant temporary jump on the other.
If PS3 drops its price without Wii dropping in response then PS3 is likely to establish a consistent weekly lead. Wii is also going to hit market saturation eventually.
“The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt.” - Bertrand Russell
"When the power of love overcomes the love of power, the world will know peace."
Jimi Hendrix
