>>96331658
Plasma is a trap option. I am legally obligated to say two Breaching 5 shots are better than a single Breaching 4 one, but autocannons shoot three shots with double the damage, making them the actual anti-termie option.
Meanwhile, plasma is actually for...for whenever you can't have a stationary autocannon yet you still want to use the second most expensive gun against basic single-wound MEQs, really. Like, not even VEQ; those are better engaged by autocannons too.
In punishing Plasma for being the anti-everything gun in 1.0 they finally created the a similar thing on autocannons in 3.0