...but it did get an Annie for Best Animated Effects in a Live Action Production.
PR did lose to The Hobbit for the other live action category, " Best Character Animation in a Live Action Production" (for Gollum). I have to admit, Weta probably deserved than win.
The full list of winners for the Annies (the major animation insider awards) is in that link. If you're too lazy to look at it, Frozen pretty much won goddamn everything. Other O-Deck friendly wins went to The Legend of Korra and Futurama (for the last time, goddamn it).