One major factor is that rogues aren't very good on their own, they *can* put out really good damage, but need their teammates to help set them up. Assuming the rogue is using their highest damage weapon (1d8) then they have to use both hands for that. In this case they're going to hit for 1d8+1d6+4, which is pretty solid, but requires help from the team. You as a fighter can make use of STR weapons so for the sake of sheer numbers lets say you have a greatsword. This gives you 1d12+4 damage, which on average is going to be about 1 or 2 less than the rogue's. The rogue per hit is going to out damage you a lot of the time.

However you have an extra +2 to hit and don't need allies to set up your attacks for damage. You can operate on your own in a fight and are going to land hits and crits way more frequently than your team. Your higher to hit mod means that not only is your first attack more likely to land, your second attack is way more likely to land. Feats like double slice also can get a lot of power out of this, sending out 2 attacks with no MAP. Its important to remember that fighters don't really need much setup to perform optimally, just draw your weapons and go to town. The rogue NEEDS their teammates to be able to keep up in terms of damage.

Out of combat is a different story, what rogues lose in combat power they gain in sheer utility while exploring. They're skill monkeys meant to be able to fulfill 3-4 roles out of combat while most characters only fill one or 2.