Yeah the DPS is nice, but considering THF is attack-starved to begin with and has the same base STR as WHM you aren't going to put out anywhere near the numbers you think you are.
As for RNG delay, a 99 relic RNG with that bullet gets 100tp in what, 5 or 6 shots with a weapon with a base dmg of 221. Meanwhile I get to swing about 20 times with a 55 dmg weapon and then do an attack-starved, AGI modded ws.
They used to be able to hold Steal and Treasure Hunter over our heads and say that we don't need damage because we have those but they obsoleted that ability and trait. I'm not asking to be a top DD, I'm just asking them to close the gap a little bit between dual-wielders and 2-handers.