Oh, there are always a few airfights and sneak busting, but you can't really find GV fights because there is so much room for them to slip through. There are a few like me who will actually seek engagment when driving their panzer. But most seem to want to kill the hanger and ack, call in an M3 to take the base, and, that failing, slip away to land their camp kills or the damage they've done.
Also, and I may just have bad luck on this, but fewer people in an arena tends to induce HO'ing in an attempt to end the fight quickly and get on with what you set out to do. I've seen people who make use of ACM only as a way to get nose on nose with you.