Here's on idea of just how crappy World Tour did compared to GH3. Keep in mind that only GHIII 2007 totals for each plaform and 2008 GHWT Wii totals are known, therefore GHWT 360 and PS2 totals are only estimates based on rank:
First the bright side...Wii:
GH3 - 2007 : 1.22 million
GHWT-2008 : 1.51 million
*Oct. 183k + Nov. 475k + Dec. 850k*
Now the other side... 360:
GH3 - 2007 : 1.48 million
GHWT-2008 : about 841k
**showing my work: Oct. 191k + Nov. (Ranked#15 @ about) 250k + Dec. (Unranked but #6 on 360 @ about) 400k**
Now for death... PS2:
GHIII - 2007 : 2.72 million
GHWT-2008 : about 715k
***showing my work: Oct. 65k + Nov. (Ranked#17 @ about) 225k + Dec. (Ranked#17 @ about) 425k***
Also, notice how quickly the 360 version starts compared to the other two versions despite where it ends up.
Well we have proof over the last 2 years that launching late on the Wii does not hurt the sales (and really late at that if you look at RB1 coming 6-7 months late and still outselling the competition) at all so I guess they figure they will allow the HD twins to get their front loaded sales first without competition.
We do not have definite numbers from GH:Aerosmith, we just know it sold most on Wii so maybe Activision thought the Wii version simultaneous release hurt the sales from the other two
IGN's article was a little misleading. First, the >1 million Wii versus the <800k 360 figures don't consider that the Wii version was just released last year and that the 360 version sold 775k in 2007. Second, IGN admits that they don't know which SKUs were being given, but we know now, based on the ranges we have from other numbers, that the article's numbers were not combined SKU ... so they're not really comparable to begin with.