Perhaps position of Mercury is the only difference in the charts of rAma and his demon opponent rAvaNa who had Mercury in Pisces, the weakest place or the nIca(debilitation). That made the demon lack the ability to judge the good and the bad.

Interesting Ramayana and badhaka planet description on the following link

http://jyotishavedika.blogspot.com/2005/12/rashi-chakra-of-sri-rama.html