Personally I would say something different. I would say:
"Adults, BECAUSE of their greater experiEnce, are able to reason about more things than adolescents ARE."
I would do these things for a few reasons:
1)"experience" is spelled incorrectly.
2) You want to make the sentence parallel, so think about finishing it. "Adults...are able to reason about more things than adolescents are able to reason about." Then you can just take off the end so that it doesn't sound redundant.
3) To answer your actual question, I would say that either fits very well.