Well Nintendo has stated it was their third best week after the launch and other one (christmas I suppose ) and it has been selling out since launch there (or so some around here tell so ) .So we must assume it has been doing worse that 25K weekly for all the year .How much worse we dont know .
X360 has in UK its biggest (and nearly only profitable ) european market ,and Easter gifts have no doubt increased their sales also .
Having that in count we must assume the amount of hardware sold weekly is more around the 8K consoles for X360 and 15K for the Wii .PS3 hasnt been around enough time to see trends ,we can only say that 225K in 3 weeks is a strong number and 17K weekly isnt any bad either .