So, my recollection of sneak attack when I played in December... whenever I connected with a sneak attack there would be two damage numbers floating by. I assumed at the time that one was the weapon damage and the other was the sneak attack damage.

IF that is correct, and IF the equation reported by Starlights is JUST the sneak attack portion, then what we have in this equation is a correct calculation of the number of dice, but an incorrect application of that number as a multiplier.

They appear to be taking the result of a single D6 and multiply it by the number of dice. This will give the same range of results as the correct procedure of just rolling extra dice, but it will be a flat distribution rather than a bell curve (meaning that extreme values, both high and low, are more likely). I suppose this isn't the worst thing in the world, but I don't know why they can't just roll the dice more times, there is no way that this "short cut" saves a meaningful amount CPU relative to just doing it correctly.