Mario Tennis was announced at the same time as Paper Mario and Animal Crossing. I think FE was, too.
No, just no.
Animal Crossing and Paper Mario were announced at E3 2010. Mario Tennis was shown around last September, and Fire Emblem a little before that.
More important than Animal Crossing, though, is Luigi's Mansion 2. :V
And Luigi's Mansion 2 was at E3 2011. While I definitely want it, AC and PM were what made me want the 3DS so bad from the beginning so I am really annoyed at how long they're being held off and games that get announced in the middle of nowhere like Mario Tennis and Fire Emblem get released long before.