I used Joe's because it's able to loot enemies after killing. (I'm not sure whether other combat routines can do that OoO) I couldnt really get pure to work as well and idk about default, Joe's just seemed the most reliable from what i've read so i stuck to it. Looking at the log i found this:
2015-10-14 00:04:49,331 [Main Bot Thread] INFO Log - Killing Warden Droid with 44.12421% health at 14.27 meters
2015-10-14 00:04:57,883 [Main Bot Thread] INFO Log - [Combat] >> Casting << Force Charge
2015-10-14 00:04:58,744 [Main Bot Thread] INFO Log - [Combat] MoveTo: Warden Droid Moving to within 0.4 from dist of 1.4 current LOS: True
2015-10-14 00:04:59,100 [Main Bot Thread] INFO Log - [Combat] >> Casting << Gore
2015-10-14 00:04:59,769 [Main Bot Thread] INFO Log - [Combat] >> Casting << Gore
2015-10-14 00:05:00,403 [Main Bot Thread] INFO Log - [Combat] Starting Rest...
2015-10-14 00:05:04,096 [Main Bot Thread] INFO Log - [Combat] Done with Rest !
2015-10-14 00:05:19,556 [Main Bot Thread] INFO Log - [Combat] Bot Memory: 201,576,448
2015-10-14 00:05:19,756 [Main Bot Thread] INFO Log - [Combat] Flushing Cache.
2015-10-14 00:05:20,973 [Main Bot Thread] INFO Log - Killing Warden Droid with 100% health at 32.07 meters
2015-10-14 00:05:22,977 [Main Bot Thread] INFO Log - [Combat] Bot Memory: 201,576,448
2015-10-14 00:05:26,331 [Main Bot Thread] INFO Log - [Combat] Bot Memory: 201,576,448
2015-10-14 00:05:29,667 [Main Bot Thread] INFO Log - [Combat] Bot Memory: 201,576,448
2015-10-14 00:05:33,042 [Main Bot Thread] INFO Log - [Combat] Bot Memory: 201,576,448
2015-10-14 00:05:36,381 [Main Bot Thread] INFO Log - [Combat] Bot Memory: 201,576,448
2015-10-14 00:05:39,701 [Main Bot Thread] INFO Log - [Combat] Bot Memory: 201,576,448
2015-10-14 00:05:43,091 [Main Bot Thread] INFO Log - [Combat] Bot Memory: 201,576,448
2015-10-14 00:06:19,575 [Main Bot Thread] INFO Log - [Combat] Death detected and In-Group (or DisableAutoRez set) - waiting for manual rez...
2015-10-14 00:12:38,216 [4] INFO Log - Log cleared.
Not sure whether the Bot memory part has anything to do with the bot not fighting.