Wrong.
Now here's why. The necrochasm can have up to 5 impact, while the doctrine has but 2 impact. I only used the higher impact damage rating because anyone with any sort of common sense would use the highest damage rating possible in a firefight, especially against the doctrine. Do your research man.
Really? Because a boost of 3 impact DOES NOT turn into 3 extra damage. I have NEVER seen my nechrochasm do 16 TO THE BODY. I suggest you check your numbers, not me. Plus I've had necro probably longer than you.
And to be clear, this is an alt account so my main can remain private. You are free to take my word or not, but impact does not translate into damage the way you think.