Actually given the way MPL v/s ERML are double the range for IS levels I'd say no the clan ones are too long in range.
The Clan Pulse versions are identical (small) to just less than (80%) the range of Clan ER's, that difference IMHO should be bigger to give the Pulse weapons some trade off in Range v/s Accuracy.
Honestly, they work fine when you factor in the extra design weight. For example, while the MPL generally beats the ERML in action it weighs twice as much which greatly constrains use when you are putting a 'Mech together. Also, the ERLL does benefit greatly from its extra bit of range which puts it out past just about everything else which can be a great advantage in the right hands.
Then again I think Clan ER's shouldn't hit as hard as they do (Same as pulse?? More in the case of Smalls) and should be 4/6/9 in damage myself.
Clan lasers need their increased damage to keep up with other weapons. Remember that the ERPPC hits for 15 damage, LRMs weigh very little, and DHS get heavy once you are past your free 10.
Now I also think Clan SPLs are too long ranges but in turn feel they should do 4-5 damage since they got no damage bonus which is what Pulse Weapons were supposed to be good at.
No, the SPL is a long ranged anti-infantry weapon with no ammo. It is valuable on that alone, and if anything were to be tweaked it would be to increase the range of the ERSL. Honestly, I could see them both doing 4 damage if the ERSL had 3/6/9 range, but you realy cannot cut back the SPL without running into the micro model.