vgchartz vs GFK:
wii:1,605,423
X3:631,032
ps3:455,910
so overall
if these numbers are ok, then the wii might have been overtracked by as much as 600k, and 360 has been over tracked by 130k with ps3 undertracked by 50k. Very significant indeed.
2008 end of year predictions:
PS3: 22M
360: 25M
wii: 40M