The only air kill I have suffered so far was on a strafe run an A10 made on the MCOMM I was guarding, that's it. Engineers now have freaking Stingers and Javelins they can equip so anti-air is much more balanced than it was in BC2. Maybe once the pilots get really good and have the counter-measures unlocked, the jets will become relevant, but they're pretty much just out there right now.
I tried flying a jet twice and crashed both times trying to strafe and not pulling up fast enough.