Focus fire needs to give it more damage. Focus fire tends to be more of a hindrance than a boon currently. Also, abyss defiant needs to have a 40 count mag. It punishes you with such a small mag making focus fire the more popular choice so you're not reloading every 5 seconds. I have all crotas primaries maxed and honestly, did damage comparisons, the pulse rifle is better and the fang is great. Abyss is the weakest out of the 4 not including nechro.