@Just_Ben, I'm not about to say their numbers are too high or too low, but they are in my opinion valid analysis.
Let's play with the numbers a bit. If all copies were Legendary, then $170 million worth is 1.3 million copies. All Limited, 2.43 million. All Standard, 2.83 million. Obviously none of these are correct, it's a mix of all three, but only GameDaily is making a guess at ratios. Now remember, that $170 million in sales is a Microsoft number, so take that with any salt you'd reserve for those sort of numbers. Regardless, I think this is useful enough information for making our own prediction.
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Let's play with the numbers a bit. If all copies were Legendary, then $170 million worth is 1.3 million copies. All Limited, 2.43 million. All Standard, 2.83 million. Obviously none of these are correct, it's a mix of all three, but only GameDaily is making a guess at ratios. Now remember, that $170 million in sales is a Microsoft number, so take that with any salt you'd reserve for those sort of numbers. Regardless, I think this is useful enough information for making our own prediction.