Hmm, I really don't think better critical perk helps on RL build. From what I've seen it provides only knockdowns and knockouts from time to time, which is useless for rocket launchers imho because the most of the critical rocket hits are supposed to be deadly.
hahahaahha, it increases the damage done by the critical hit, its easy to know, my EW Pistlero does 100DMG with crticals of laser pistol using beter criticals, otherwise it will only do 50 or 60.
the way how it works is unknown, thanks devs!!
I think the built is bad, you can do a critical triple burster and had a 3/5 of make a crit if you use all your AP, but probably you will not survive to spend all the burst