From what I remember:

Equipment was worth more than a capture.

Capture was worth more than a kill (get Intel, trade for Ukranian captives).

Kill was xyz points.

The more points, the more weapons, equipment, and support you got.

This was several years ago, I'm not sure its still in play.

People talk like Ukraine is the first one doing this. Already in WW2 pilots had similar gamification where proof had to be filmed or with minimum witnesses. It probably goed back even further.