Pixar and everything else - them's the breaks when it comes to judging computer-animated fare these days. Although Pixar has rightfully earned themselves the lead among studios, and by a significant margin, it's all too easy to then marginalize the performance of others.
DreamWorks has certainly raised their game beyond pure pop-culture recitation with the inventive and entertaining likes of Over the Hedge, Kung Fu Panda, and Monsters vs. Aliens (and Aardman or no, I'd even include the winning Flushed Away among their finer efforts). For every Open Season, Sony has given us a Monster House (okay, so that's just one-for-one at the moment). And every time that Fox bequeaths to unwilling audiences something like Space Chimps or Everyone's Hero, Blue Sky has nothing to do with it.
Fox/Blue Sky, however, is the precise pairing that gives us the visually engaging and moderately amusing outings like Robots, Horton Hears a Who!, and the Ice Age films, with the latest of which -- Ice Age: Dawn of the Dinosaurs -- falling right in line with that modest-yet-reliable tradition.