Lack of advertisement on television and the quality of their ads. I never saw a Skyward Sword commercial on tv but I had to YOUTUBE them and they lacked creativity and the sense of 'oh this game looks awesome I have to go buy'. MW3 commercial-now that's how one should advertise.
There were a lot of commercials on tv for it, almost every commercialblock had one in the evening. They were all the same tho, all those with robin williams and zelda williams in it.