I took a closer look at this, and it turns out that there really isn't any overall advantage.
While it's true that IS lasers have shorter durations, they also has a lower damage potential per duration.
As the table below shows, some IS lasers have better DPS than some Clan lasers and vice versa.
DPS is what is key, but I've also put in Damage per Equal Duration (DED) which shows how much damage each laser does when hitting the target for the same duration (IS weapon duration).
Depending on if you compare CERLL with LL or ERLL it's either a draw or +1 to IS for DPS.
It should however be compared to ERLL as the CERLL shoots further than both IS Large Lasers.
So in pure duration/DPS it's an overall draw.
When both IS and Clan lasers start to fire it's an overall draw, but, then the IS laser stops firing, and the Clan laser continues to put damage on target. From further away.
Now, please, stop saying that IS has an advantage in laser duration.
Edited by Yellonet, 14 September 2015 - 03:03 PM.