Sorry I meant to include a high objective points too while still coming in top 3. Though we all should be able to pull out damage and still focus objectively.
High objectives can be kinda meh. Were you at the zerg on a node your team had captured (and pretty much the entire time on defense in Voidstar)? That's gonna be a lot of defender medals. Were you at the zerg when node was captured (in civil war) that's attacker points.
Quite often in Huttball the losing team will have more objective points because you get defender points everytime you kill the ball carrier, so if they spent the majority of the time controlling the ball you'll have a lot of defender medals.
The scoreboard doesn't always tell the full story (and even a lot of the story it DOES tell is in the stuff you have to mouseover to see).