I never thought I would see Wii fans so excited after being beat by PS3 for the first time ever in America.
I'm not sure why it is a shock either. VGchartz data for the month suggest that PS3 beat Wii by 34,000. NPD data showed 29,000.
I think people forget that the main reasons for it doing so well worldwide were even greater numbers in Others, and a strong Japan launch.
By the way, PS3 numbers are drastically up from last year, Wii numbers are drastically down. Keep in mind both had price cuts.