Yeah... they felt his voice was too old sounding, so they redubbed his lines.
I try very hard to reserve judgement, and I find out half the stuff I give a chance and try to like I do... the other half proves me right, and makes me HATE the fact I gave it a chance. I didn't think I'd care for Regular Show or Adventure Time... I didn't even like AT's artwork... but I gave it a shot and I quite enjoy them now. The Yogi Bear movie I reserved judgement for, I blew 6 bucks seeing it, and I cannot stop talking about how awful it was.
Now... how much of a chance is someone willing to give a movie that did poorly at the box office, looked terrible, and came from a studio with a history of poorly performing, ugly movies? I tried giving Polar Express a shot on television and HATED how it looked, and how it was a nightmarish, dark, murky, scary stunt filled version of a quiet little book I loved as a childhood bedtime story. A D student can get the occasional C, but if he still gets D's afterward, it's a lost cause.
Sometimes the cover tells you EXACTLY what the book's about.