my projected xbox sales, assuming the vgcharts preorders and the real sales have the same procentual differences for each game:
| ps4 preorders | ps4 sales | sales / preorders | xbox one preorders | projected xbox one sales | |
| Call of Duty: Ghosts | 440,772 | 703,638 | 1.596376358 | 462,512 | 738,343 |
| Battlefield 4 | 360,563 | 396,187 | 1.098801042 | 204,905 | 225,150 |
| Assassins Creed 4 | 287,610 | 345,175 | 1.200149508 | 196,273 | 235,557 |
| Madden NFL 25 | 105,630 | 133,176 | 1.260778188 | 89,881 | 113,320 |
| NBA 2K14 | 87,020 | 111,674 | 1.283314181 | 56,361 | 72,329 |
| Fifa Soccer 14 | 68,986 | 77,914 | 1.129417563 | 54,715 | 61,796 |
didn't include NFS, since it was in the preorders for last week for the ps4 with two weeks left, but appears in the sales, dunno what to do with that.
so the sum of these titles is 1,767,764 on the ps4 and 1,446,494 on the xbox one. now if you take this in relation, xbox one "could" sell 80 percent of what ps4 sold. i.e. ~800k.
but this last calculation is way off. because the fact i only have multiplatform titles to compare, and the xbox has more appealing exclusives. so based on this you can expect the xbox to sell the same, if not more than ps4!
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other method:
ps4 had 2,196,884 software preorders, xbox one has 1,874,035 - that's 85 percent. so if we assume both systems have the same attach rate, the xbox should sell 850,000 units FW in the USA.

must-have-list for platforms i don't own yet:
WiiU: Donkey Kong
XBone: Dead Rising 3, Ryse







