Had a look at the numbers and there is a chance all three could hit the mark in the same week, but obviously boosts and slowing sales affect when they will hit those marks so I thought I would get your predictions
Xbox 360 - 992,652/7,348
24th January - Estimated time reaching goal with this weeks sales 7.3k (12 weeks) 914,083
31st January - Estimated time reaching goal with this weeks sales 7.4k (11 weeks) 921,481
7th February - Estimated time reaching goal with this weeks sales 8.1k (9 weeks) 929,577
14th February - Estimated time reaching goal with this weeks sales 10k (7 weeks) 939,576
21st February - Estimated time reaching goal with this weeks sales 24.1k (2 weeks) 963,707
28th February - Estimated time reaching goal with this weeks sales 13.2k (2 weeks) 977,956
7th March - Estimated time reaching goal with this weeks sales 14.7k (1 week) 992,652
Street Fighter IV and Resident Evil 5 should give the 360 a slight boost, Ninja Blade seems to have done nothing if previews are anything to go by. Not much else software wise coming out for the 360, other than Star Ocean 4!!!
Microsoft has the bundles ready, they know they sell like hot cakes, it all depends on if Microsoft get enough of these out. SO4 doesn't look to be a run of the mill JRPG, the Japanese should lap this up. Also note RE5 is getting a bundle. Halo Wars is unlikely to make any impact whatsoever.
Playstation 3 - 2,968,890/31,110
24th January - Estimated time reaching goal with this weeks sales 17.8K (10 weeks) 2,824,281
31st January - Estimated time reaching goal with this weeks sales 16.9k (10 weeks) 2,841,204
7th February - Estimated time reaching goal with this weeks sales 16.8k (9 weeks) 2,857,983
14th February - Estimated time reaching goal with this weeks sales 19.1k (7 weeks) 2,877,072
21st February - Estimated time reaching goal with this weeks sales 16.2k (7 weeks) 2,893,283
28th February - Estimated time reaching goal with this weeks sales 35.9k (2 weeks) 2,928,635
7th March - Estimated time reaching goal with this weeks sales 40k (1 week) 2,968,890
Again Street Fighter IV and Resident Evil 5 are out in this period, these games should also give the PS3 a bigger boost than the 360. Not sure if there is a RE5 bundle? Killzone 2 like HW is unlikely to make an impact. Yakuza 3 should give a boost. A quick look at wiki shows no other games are coming out in this timeframe that will have an impact, we all know how unrealiable Wiki is though so if you know of a game you think could boost sales please let me know (don't just list any old crap, please)
Wii - 7,898,477/101,533
24th January - Estimated time reaching goal with this weeks sales 26.5k (9 weeks) 7,775,360
31st January - Estimated time reaching goal with this weeks sales 24.3k (9 weeks) 7,799,669
7th February - Estimated time reaching goal with this weeks sales 20.1k (9 weeks) 7,820,565
14th February - Estimated time reaching goal with this weeks sales 20.1k (8 weeks) 7,841,573
21st February - Estimated time reaching goal with this weeks sales 18.1k (8 weeks) 7,859,703
28th February - Estimated time reaching goal with this weeks sales 20.2k (6 weeks) 7,879,956
5th March - Estimated time reaching goal with this weeks sales 18.6k (6 weeks) 7,898,477
Again a quick look on wiki show nothing! If you know of anything post and let me know.
Personally I reckon Playstation 3 will nip it, depending on how many SO4 bundles Microsoft put out!