Since its probably best if we discuss weapon damage in a separate thread rather than continuing to derail the ore thread, I figured I'd put the post here.
As Hooman pointed out, Penetration damage ignores armor while Concussion damage partially ignores armor. So, early game weapons Laser v Microwave, should be fairly balanced against eachother because:
Laser (30 Penetration) vs Microwave (20 Penetration / 20 Concussion). If it is assumed (I don't know how much concussion damage goes through light armor) that Concussion damage only deals 50% damage to Light Armor, then theoretically, both weapons should be on par in the early game (30 Penetration vs 30 damage total (20 Penetration + [20 * 50%] Concussion).
Even with Independent power systems they should remain balanced in the early game (assuming that 50% damage only is dealt to light armor with concussion) as it would be Laser (45 Penetration) vs Microwave (30/30) or 45 vs 45.
Now clearly, the Laser would remain powerful into late game as it would deal 45 damage even to extremely heavily armor Tigers, while the Microwave would do significantly less.
However, the problem is that early game Eden is at a supreme disadvantage to Plymouth (which I'm assuming is why no one plays Eden in Multiplayer). Is the only reason Plymouth is superior is because it get's it's Rate of Fire upgrade sooner, than Eden?
Or is it also possibly because Concussion damage deals more damage than 50% against light armor and thus is technically dealing more damage against Light Armor Lynxes than Eden is?