Little guys can fight to, i saw an Jenner take out a atlas the other night 1 v 1
True, got a lucky headshot on an Atlas in my Raven once but the chances of repeating it are slimmer than winning the lottery. I'll wait till ECM comes out before I stick my head back outta my hole into the LRM rain.
If you can't use heals, try training Logistics to 5 and getting in a Scimitar. For better killing of stuff, I would recommend maybe putting a few target painters on your ship and make sure the range and tracking characteristics of your turrets, as well as damage type, line up with your target's velocity and resists.