Well, it is a Radio Control Aircraft simulator...so the combat it has is focused on that style of flight - multiple planes in the air at once, viewed from the ground, trying to cut streamers or similar. When in multiplayer it does have several different types of those arial combat events.
But it is not, and likely will never be, a realistic sit-in-the-cockpit and shoot down/blow up type combat simulator. There are many of those around.
It was pretty popular with several of my club members to do this on-line, for a couple of years. It replicated what we do at the field very closely.