So, looking at the wiki:
http://wiki.spiralknights.com/Nova_Driver
http://wiki.spiralknights.com/Umbra_Driver
http://wiki.spiralknights.com/Storm_Driver
http://wiki.spiralknights.com/Hail_Driver
http://wiki.spiralknights.com/Magma_Driver
Other than the differences in status and damage, I noticed that the basic attack and charge attack description between the nova/umbra driver and the storm/magma/hail driver seemed to be different. It could easily be because of different users editing the wiki, but I just want to make sure.
From the nova/umbra driver:
"Basic Attack
A 2-shot combo. Each bullet will ricochet twice and damage adjacent monsters.
[edit] Charge Attack
A large bullet which will split into four smaller bullets upon impact. Two bullets split off at right angles from the original shot, two fire back towards the gunner at a 45 degree angle, similar to previous versions of the gun. Each smaller bullet will ricochet twice."
From the storm/magma/hail driver:
"Basic Attack
A 2-shot combo, chance of Fire(/Shock/Freeze) on hit. Each bullet can ricochet up to two times, damaging adjacent monsters.
[edit] Charge Attack
A charged ball, chance of Fire(/Shock/Freeze) on hit. Upon explosion, it splits into four normal bullets that can deal additional damage."
Is there a difference between the weapons other than the status, damage type, and damage differences?
"It could easily be because of different users editing the wiki, but I just want to make sure."
You are correct in that assumption. It is more likely that one or two of the pages were updated and the others were forgotten [since one update does not reflect all the other pages].
"Is there a difference between the weapons other than the status, damage type, and damage differences?"
No.