I've played loads online ,and don't think I've ever come across an aimbot.
Some very good shots ,but after getting used to the pace ,I've pulled off some pretty good shots myself.
There are a few other good mods ,btw.I like the realism severs .Where you don't get cross-hairs or those little flag things floating above your head .Although I did nearly get kicked once for killing 3 of my own team in a row ,but war's hell.
The merciless mods fun.All that blood ,great stuff.