I thought it was common knowledge that the story was based on Christ.
In the Last Battle, at the end of the book, Aslan actually transforms into Christ in front of the now grown up children. I'm with you, I don't think there was ever any doubt that Aslan = Christ.
BTW, my kids Christian middle school has Aslan as its mascot. They're taking the entire school to the movie next week. I was at the Steven Curtis CHapman/Mercy Me Christmas concert earlier this week, and they played a music video with a trailer from the movie. Looks AWESOME!
Same here. I never realized there was a controversy.