The NES sold roughly 62 million.
The Wii sold 6.51 million between this time last year and the end of 2008.
Adding that on to current Wii sales would give 63.2 million.
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Wii was down 14% this week.
If it's down 14% for the rest of the year: 6.51 * 0.86 = 5.60 million
56.69 + 5.60 = 62.29 million
Which is just above the NES. But, the Wii will probably go down further YoY, around the time when the Wii began to take off and sell 1 million + in 2008.
So, I now say no, it won't.