360 sales wouldn't be the "bulk" of that number. At best, 360 sales would be just slightly higher than PS2 sales. In addition to those two, you've got sales split between the PS3/Wii/DS/PSP versions as well.
I'd say that the 360 version accounts for about 30% of total sales, which would put it at about 1.35 million sold. There's absolutely no way this stock should be higher than 150 and if you think it should be at 220, you need to go back and re-think your assumptions, especially regarding PS2 sales.
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360 sales wouldn't be the "bulk" of that number. At best, 360 sales would be just slightly higher than PS2 sales. In addition to those two, you've got sales split between the PS3/Wii/DS/PSP versions as well.
I'd say that the 360 version accounts for about 30% of total sales, which would put it at about 1.35 million sold. There's absolutely no way this stock should be higher than 150 and if you think it should be at 220, you need to go back and re-think your assumptions, especially regarding PS2 sales.