I made some straight cuts in 2" x 4" s and the laser was right on.
There is an adjuster toward the back of the laser- a 3/32 allen key can adjust it left or right. Mine moved a bit, probably from the vibration of the saw. I was able to easily adjust it back to straight.
With an AC motor you can't calculate the wattage by multiplying the voltage by the current (amperage). I won't get into a technical explanation but the peaks in the AC current are delayed from the peaks in the AC voltage. The wattage is equal to the volts X amps X a power factor, which is always less than one. That said, the wattage is really only of interest with respect to how much electricity your're billed for. You need to consider the current to determine whether you are overloading your wiring. The 15 amp specification would be when it reaches it's maximum load. I haven't measured this saw but my 15-amp rated table saw draws 8 amps with no load. I don't really have the means to measure it safely at full load.
looking and works good for an all purpose type saw that can cut wood