Not really surprised by Angry Bird reviews. Reminds me a lot of Cloudy With A Chance Of Meatballs which I thought looked worse than the reviews ended up being. Plus that was before we knew how great Lord and Miller were.
I've had this at a 180M opening for the past 6 months and just recently changed it due to hype from other box office sites. I think from now on I'll stick with my gut.