Gearbox seems to have no idea how critical damage works. You only need to look at anoints where they compare 25-50% crit boost to 100-300% normal damage boost. Been saying this for a while, crit bonuses NEED to be higher than normal ones, otherwise the total damage output (even on a crit hit) is still lower.
Of course they can’t balance crit bonuses on guns when they’re that messed up on how powerful such bonuses actually are. The Bitch should do slightly less damage than similar smgs and have a big crit boost to compensate. Hell, given that crit hits do double base damage, its obvious that for each 1% damage they remove from the gun, they take 2% away from any crit hits it deals, so they need to add at least 2% back as a bonus for it to be decent. For example, on the wiki, a level 50 Bitch does 219 shock damage +65% crit, while a level 50 kybs worth does 566x2, a level 50 cheap tips does 416 +21% crit, an emp5 does 458 +10% crit, a ripper does 257 shock damage +10% crit, etc. Working out the crit damage of each gives Bitch 580, kybs worth 2264, cheap tips 919, emp5 962, ripper 539. So, even though crit hits are the bitches focus, they do less damage than many others, and only barely more than the ripper which gets a x2 damage boost on top if you melee first, so make that crit 1078. And sure,other stuff like fire rate and accuracy matter too, but that ripper had a better accuracy, reload and fire rate, so its not even like the bitch excels everywhere else. Oh, and it had a higher chance to trigger a DoT which also deals more damage because DoT damage is based on base damage not crit bonuses.