Tri-beam laser rifle: Brush gun:Base damage: 22*3 = 66 damage Base damage: 75 damage+ Laser Commander: 25.3*3 = 75.9 damage + Cowboy: 93.75 damageRate of fire: 2.73 Rate of fire: 1.85Basic DPS: 207 Basic DPS: 173Crit chance w/ 10 luck = 10% Crit chance w/ 10 luck = 10%+ Finesse: 15% + Finesse: 15%+ Laser Commander: 25%+ Set Lasers to Fun(2): 29%Crit multiplier: x1.5 Crit multiplier: x1.0Total chance of critical hit: 43.5% Total chance of critical hit: 15%Crit damage: 22 to 66 (we'll use 44) Crit damage: 75Crit chance * crit damage * RoF: 52 Crit chance * crit damage * RoF: 21Average DPS with crits: 259 Average DPS with crits: 194
"Better Criticals", 1st Recon beret, Light Touch, all increase the gap further. (Don't forget that crits ignore armor, too)
Consider the fact that the tri-beam laser reloads 8 shots as as one action, while the brush gun requires you to load each round individually. If reloading is involved, tri-beam will quickly pull ahead.
For grins and giggles, use Max Charge ammo in your tri-beam laser rifle: damage +50%, target DT-10. .45-70 Semi-wadcutters? +20% damage and DT-6.
Brush gun can hit them further away, but as far as raw in-your-face damage.... Tri-beam. They serve different purposes.