I dropped into a Jade Cerberus game in progress with a HA, TGI Harrier, and an AIU Reeger. It was wave 3 when I dropped in, and I was a Venom toting Fury, a kit which I haven't played in forever. Of course, with that kit, it doesn't take long to rack up the score, and I started noticing the TGI & AIU ignoring the objective (escort & devices). To top things off, they went nuke crazy on extraction. I didn't care, and I didn't want to waste missiles, so I just played normally. I ended up third, but who f'ing cares?
To answer you, GI Jav's range > Reegar range. Snipe everything before they reach them. Those are good times indeed.