Rogues deal more sneak attack damage at all levels this comparison matters; rangers deal between 1-2 more damage with both hunters mark and colossus slayer, which is usually insignificant.
The bigger issue is that rangers have significantly more HP than rogues, and AC, so giving them a free damage increase due to poor coding still ain't great; the other problem is that rogues don't get expertise ATM, which is a vital part of rogueing.
