That's a pretty weird fighter build or you are either comparing a 9th level* rogue to a first level fighter or a 9th level fighter who somehow spent none of the nine(?) feats it has on stuff that improve it's capabilities in dealing damage. Are you comparing a DPR focused rogue to a fighter designed to be indestructible or something?I'd like you to introduce my titular 3e rogue who casually did 1d10+5d6 slashing and piercing plus 1d4 DEX damage on sneak with the bastard sword* he was allowed to use with sneak vs the sad 2d6+1.5STR the fighter was struggling to do.
And this is before enchanting the Last Kiss to Merciful, which means the fighter's job is coup de gracing all the knocked out guys in my wake.
If it's not a level 9 rogue to a level 1 fighter comparison, what did the fighter spend all of their feats on or what PrCs did they take? At those levels it wouldn't be uncommon for a fighter to be dealing like 60-80+ damage most rounds.
*5d6 sneak took level 90