here is a good comparison look at both rumors of Fighter and Galaxy S3, my vote Figher > S3. read a report online of how quad core could be good but at the same time it can be a huge battery killer for phones. and with the Galazy S3 giving such a low battery I would give it <12 hrs battery life.
http://www.androidauthority.com/samsung-galaxy-s3-vs-motorola-droid-fighter-74565/