I do agree that lasers should have a greater bonus to hit - but only at Point Blank range. That is when the convergence of weapon speed, attacker control, and target reaction speed work the most in favor of the laser. The majority of the time, a person misses with a firearm (or laser/blaster/disruptor/etc in a sci-fi game) mostly due to the movement of their firing hand. Little movements there translate into huge movements down range, and the further the range the worse the effect. So, even if a laser has huge ranges (and I fully believe that their long and extreme ranges should far outstrip most of the other weapons out there) the greatest influence on the successful attack is the hand of the user. (Yes, that sound very basic, and it is, but it truly applies here.)
For this, I would give them a larger bonus for a point blank shot and, maybe even, short range, but keep the rest. And I would increase their medium, long, and extreme ranges a bit.