One is just a grind bot that has hotspots coded for BG's and very limited functions. (PvP bot) however it is debatably more reliable. The BG bot is in beta obviously, but actually functions more akin to how a normal player would in a BG, for example capturing flags, defending, capping, etc. Resulting in a "smarter" bot, = less chance of getting banned, and a higher chance of winning the BG.