Assuming that I understand the way the mod works correctly, it gives +80% additive base damage per unique status effect currently on the target. That being the case, it will be inferior to a maxed Primed Pressure Point until three different status effects have been applied. Why does CO seem to be preferred when it just seems to be not as effective unless you’re also running a status primer of some kind?
The main reason is that you get more damage out of CO than PPP and that’s why it is preferred. Statusing enemies is a natural and common occurrence in Warframe missions. In order for PPP to be better most of the time it would take an environment where status procs are less frequent to the point that the flat PPP bonus is higher more often than the CO bonuses and this simply isn’t the case unless you can craft this theoretical environment (by playing solo without a companion and also ensuring that you have very low status chance on your weaponry). Or you could just play CO which is fine on its own but scales up (hard if you lean into it with priming).
In Warframe, flat bonuses are fine until you reach harder content where your build will need to ramp up to keep up.