I would think grouping would help. I wish I could find a group, but then again, I have been a 1 man army lately... Case and point last match.
I am in my non-founders Atlas-D (training it up to get to elite again):
Engine: 300
2x UAC 5
2x SRM6
2x Medium Lasers
heatsinks and ammo (lots of ammo)
Anyway, I had to kill 3 founders Atlas-D's, 3 Catapults (2 were K2's, 1 a founders), and a Hunchback 4G (I think). My team managed to kill a single other mech (which I won't name since I do not believe it has been officially announced, but it was a medium). I was the sole atlas in our group.
Five of those mechs I took out solo before anyone else even got a shot in on them (the 2 K2 cats were both head shot and dead in 2 cycles of my UAC 5's + 1 volley of the SRM's, the founders I got behind him and when he twisted to see was was shooting him, I shot his head off as well). The hunchback though he was being sneaky and was getting behind one of our cats, but in reality he was just opening up his back directly to me which I cored in 2-3 volleys. The second atlas I fought actually knew a little about what he was doing and put some damage on me before I could aim my SRM's and UAC 5's at him (he was keeping himself too low off a hill for me to aim down at him), but once I got close enough to remove the angle he had, he was dead.
I really don't know what my team was doing to be honest with you. They at least helped shoot at the last atlas before I closed range and blew his head off (like just about everything else I killed, but they were shooting his arms and sides...).