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jason1637 said:
globalisateur said:

 The fact that PS4 mostly had only one SKU in July is going to be a big problem for July. PS4 is going to be second, not third in July. Your method of prediction can only be consistent if the number of SKUs is roughly the same.

You'll have to take care of the problem soon or later.

We should wait for NPD to see if any changes need to be made. PS4 has been having shortages at retail and the XBO had a pretty strong prime day performance so PS4 could be third. 

I think Symbios has tweaked the tool already a bit too early with the multiplier for the XBox, the tool was already fairly accurate......seems also to me the skew in XBone figures could have come from revenue impact of the XBOX1X.

I am not at all convinced of the number of SKUs majorly affecting the reliability of the tool......that should be already taken care of in the weighting allocated to position. If there is only one SKU or a widely popular one dominating other SKUs of same device, then its position should always be high enough to get an equivalent point haul.