It’s not the Bee, but it still depends on the weapon you use it with. Using the Quad? You’ll barely get any damage. But use it with something like a Maliwan pistol and is should be a large damage increase.
No luck with Mongols?
Probably a Strafing Run if you have the aim.
IDK about the damage comparison on which is better. But for the Slapper Clappy wants the DP, since it gets you to the last shot fastest. And remember the Fragnum has +25% crit damage.
But I think for normal play, Jack and Clappy are the only ones that preferred the Fragnum iirc.