noooobie question & weapon musings

ZOMG ITS A NOOB, GET IT.
>.>
Okay, I'm kidding.
I have a question, though.
Is there something that I am missing, in regards to weapon damage?
For example:
Sword: 600 Energon, Light To Moderate, Short Recharge.
Disruptor Rifle: 400 Energon, Light To Heavy, Short Recharge.
Or even better.
Underwater and Surface To Air Cannons: 1 Firepower, 2 Skill, Moderate Damage, Short Recharge. 1000 Energon.
Plasma Blaster: 1 Firepwoer, 1 Skill. Moderate Damage, short recharge.. 8,800 Energon.
I have to be missing something.
Are weapon names just fluff, or is there something that makes the Plasma Blaster a dramatically better weapon than the underwater and surface to air cannons?
Why is the sword more expensive than the rifle, yet by there does less damage?
Sorry to be n00b, just trying to figure some stuff out
>.>
Okay, I'm kidding.
I have a question, though.
Is there something that I am missing, in regards to weapon damage?
For example:
Sword: 600 Energon, Light To Moderate, Short Recharge.
Disruptor Rifle: 400 Energon, Light To Heavy, Short Recharge.
Or even better.
Underwater and Surface To Air Cannons: 1 Firepower, 2 Skill, Moderate Damage, Short Recharge. 1000 Energon.
Plasma Blaster: 1 Firepwoer, 1 Skill. Moderate Damage, short recharge.. 8,800 Energon.
I have to be missing something.

Why is the sword more expensive than the rifle, yet by there does less damage?
Sorry to be n00b, just trying to figure some stuff out