Needs more comparison to disney's aquisition of pixar for almost twice as much. Since then, Pixar have released Cars, Ratatouille, WALL-E, and up, which have an average rotten tomatoes score of 91.25% and metacritic score of 87.5%. Compare this to their pre-Disney portfolio, with a rotten tomatoes score of 96.8% and metacritic 85.6%. Notice any significant change? No, that's because there isn't.
However, Wall-E and UP had a budget almost six times that of Toy Story, and double that of The Incredibles, Pixar's last pre-Disney film. They've also released a film every year as opposed to six films in the 10 years before disney's acquisition of them.
I foresee no noticeable change because of this acquisition.