ofc some balance changes to laser dmg would be needed because CH have very low laser dr while CA have 60%
for example 45-50 laser DR armor so lasers will not be that OP, tesla helmet will not be must have against them and -10%laser dr to gatling to not affect them
btw you can still take Tesla Armor..
edit : laser rifle and tesla helm are both very OP things, it should be like option, like counter but not must have if you play against them, this can also bring some balance to this