I get loads of assists (which feel like kills but game doesn't register them as such because animation delays and ping that result in others technically getting final blow). And generally kills too. But I can't say I have BH4 that often for whatever reason. I'm much more concerned with catching nodes nobody else is bothering with, pointing out major objectives like S ranks, pointing out which team or objective we should be prioritizing, defending others capturing nodes, baiting enemy alliances away from what their priority should be, or catching strays from enemy teams. All these things involve a lot of fighting and assists, but battle high doesn't particularly get farmed from doing these things, at least for me.