Not to mention they're comparing almost 7 years on sale to just a few months.
Just to compare properly: Mario Kart 8 has sold 3.49m as of September 2014, which is 5 months on sale. To compare, Mario Kart Wii at September 2008, also 5 months on sale, it had sold 9.53m (http://www.nintendo.co.jp/ir/pdf/2008/081031e.pdf)
Still a drop, but come on...if we're going to use figures to compare and spout gloom, can we at least use contextually valid figures?
Thanks for putting the numbers in context & perspective. Too bad most of the drive-by posters that mock the 3DS and Wii U numbers won't consider this. It would be like calling the PS4 console & software sales a disaster compared to PS3 (but something tells me they'd suddenly realize "time" is a thing that exists).