10 years after this thread, I have the same question!
After reading a bunch of reviews, talking with some owners and test driving 2015 WRU and 4R ( http://www.toyota-4runner.org/5th-gen-t4rs/165192-2014-wrangler-unlimited-vs-4runner-3.html#post1899566 )
and just one step to get my 4R, my car...