WiiStation360 on 09 April 2008
The amazing thing is that they were both still outsold by the PS2 over the same timeframe.
VGChartz Hardware data for the period 07th Apr 2007 to 05th Apr 2008:
Console | PS3 | X360 | PS2 |
Total | 8,782,210 | 8,779,090 | 9,246,805 |