"is that fair to compare ps2 japan sales which started in march and had 1 mln. consoles available in first 4 weeks with ps3 in november, which had only around 250k?"
I don't know why it would be unfair to compare PS2 Japan to PS3 in Japan since the numbers you gave for both (1 million and 250 thousand), are lower than the first week in Japan. PS2 sold 800,000 units first week in Japan, PS3 sold 80,000 units first week in Japan. It took 5 weeks for the PS3 to get to 250,000 units in Japan, so I doubt there was too much of a supply problem, especially compared to the Wii first few months in Japan. Link.
"is that fair to compare ps2 sales of usa which started in October with ps3 sales which started in november?"
Oct and Nov are only 1 month apart.
"is that fair to compare ps2 sales of europe which started in November with ps3 sales which started in march?"
When you note holiday periods, and make sure each has had enough time to show sales trends (I believe you need 2 years of data anyway, so all these comparisons are still a year not enough). Also, this doesn't help your case, since the PS3 did better than the PS2 did, even though the PS2 had the holiday periods. Link. It's important to note that the PS2 might have had supply issues at this point, but I can't say for sure. Either way, the PS3 still did roughly 2x the number first week.
"is that fair to compare x360/wii sales of europe which started in November with ps3 sales which started in march?"
It's not entirely fair, for the simple fact that the PS3 beats the Wii and 360 even though it's not the holiday for the PS3, it beat them in first week sales. Do you have a problem with the PS3 beating the Wii and 360? We can ignore this data if you wish. Link. =)
"is it fair to compare ps3 sales in others(which did only 30k in first 16 week), with x360/wii sales in others of their first 16 weeks?"
No it's not, simply because the PS3 was launched in Hong Kong at the same time it was launched in Japan. That's why I used Europe only for the aboves.
"is that fair to compare sales of console which cost on launch 600$ with consoles which cost 250$ and 400$?"
Maybe not entirely. But well you are comparing a $400 console to a $300 one. Also, the PS2 beat the GameCube which was $100 cheaper. You can't use price as a determining factor, simply because if the PS3 cost $300 at launch it wouldn't be the PS3 we know, and if the Wii launched at $400+ it wouldn't be the Wii we know. So you can't say "the PS3 would sell amazing at $300." yeah it might, but we won't know because the PS3 was priced at $500 and $600 at launch, and that's the way it is. If anything, comparing the cheapest version of the PS3 at $500 at launch you can compare it to the 360 at $400, since that's the difference in price between the PS2 and GameCube. And since you believe the Wii is CHEAP, and who wouldn't buy it, then twice that price really can't be all that bad?
