Anyway, onto the actual numbers. Spreadsheet can be found Here and I will Provide formula's and calculations if asked (Or just look at the spreadsheet, most of it is there).
Ranges: Almost all Clan lasers have 50% more range than their IS counterparts. This was surprisingly even across the board, with only Clan Large Lasers/Pulse being outside this range (64%)
Damage per heat: A fairly important stat, this describes how much heat you generate per damage dealt. Clan small lasers are top performers here, actually having the same or better damage per heat than their IS counterparts. The Clan ER Medium is fairly close to the IS medium, and the rest hover slightly below that.
Edit: Since quirks have come up as a major balance point, I have averaged all energy quirks on IS chassis (172 total mechs). I will upload a quirked comparison soon, but for now allow me to post the average quirks.
Laser Duration Average: -8.75%
Energy Cooldown Average: -8.5%
Energy Heat Generation Average: -7.7%
Energy Range Average: +8.3%
Damage per Tick: For the purposes of this discussion, a tick is defined as the damage a laser will do if held on a component for 1/10 of 1 second. The Clan small and medium lasers actually do more damage per tick that their IS counterparts. This means that if you hold a IS and Clan medium laser onto a component for the same amount of time, the Clan laser will still do more damage. The Clan small pulse is identical to the IS small pulse here, and the rest of the clan lasers all to less damage per tick than their IS counterparts, with the CLPL being the worst.
Damage Per ton: No surprise here that clan have IS beat in every way. All clan lasers to at least 30% more damage per ton, with clan smalls doing a staggering 66% more damage per ton.
Comparisons: CERSL to Medium Laser. These two weapons are actually very similar in terms of range, with the CERSL having a full 75% of the range of a medium laser, very good for half the weight. They do exactly the same damage per ton, though the CERSL takes 1 more tick to do its damage fully. However, the Clan ERSL generates 1 less heat than the medium, and weighs 50% less, making it a somewhat better weapon.
Comparisons: CERML to Large Laser. Not quite as similar as the previous two were, the CERML is still quite close to the LL in terms of performance. It deals nearly 80% of the LL's damage, though an extra 0.15 seconds hurt its burn time. The IS LL also has it beat in damage per heat, though this is much closer. Both have nearly identical range profiles, with the CERML having 10% less range. Where the CERML really shows its power is in its weight, weighing a staggering 4 tons less than the LL, a mere 20% of its total weight. If you feel like throwing ghost heat into the equation, it can also fire twice as many lasers without ghost heat.
Explanations of Theoretical Weapons: I tried to remove the ER aspect of clan lasers, to get a little more accurate comparison of weapons. Since the IS ERLL has 25% more range and 25% more duration than the LL, I assumed that 1% range = 1% duration. I also removed 1 heat for becoming an standard laser. (I think I may have gotten the burn times a little off though. Double-checking would be nice).
Edit; Since so may people complained about quirks, I averaged IS quirks across all chassis (172 total) and added the results to a new spreadsheet here. For those who don't want to or cant look, Most IS laser quirks (Range,Cooldown,Duration,Heatgen) are at about 8% for all mechs.
Edited by Powerbomb256, 09 July 2015 - 02:30 PM.