Talk:Damage/Impact Damage/@comment-178.222.169.145-20150427013318/@comment-86.34.145.78-20150916134200

You all got it wrond here. IMPACT does have a bonus at Corpus. Judging the ratios alone is not good, because you won't see any mob having just one type... they are combined.

for example Grineer unit types are like:

- Flesh + Ferrite Armor

- Flesh + Alloy Armor

- Robotic + Ferrite Armor

- Robotic + Alloy Armor

and Corpus unit types are like:

- Flesh + Shield

- Flesh + Proto Shield

- Robotic + Shield

- Robotic + Proto Shield

So lets talk about the Corpus faction. For crewman you would have flesh + shield (http://warframe.wikia.com/wiki/Crewman) so that means the impact damage would have -25% + 50% = 25% damage bonus. For a flesh + proto shield the bonus would be 0, and for any robotic the bonus is 25% or 50% depending on the type of shield that unit has.

Furthermore, the impact damage is only a small part of the damage you inflict on an enemy, giving the fact that your weapon does all 3 main damage types, in general: slash, puncture and impact, and only the damage part of impact will suffer the bonus/penalties if any.

Also the damage formula is much more complex than just -25% penalty or 50% bonus. Lets presume your shot has 5000 base dmg, your final number depends on what unit you actually hit, and what damage types your shot had. Lets say you hit a basic grineer unit with flesh & ferrite armor, and your shot has impact, puncture, slash and heat damage. The final number will take into consideration all bonuses & penalties for all 4 damage types according flesh and ferrite armor, in the ratios (%) of the shot. That means that the -25% penalty is only applied to 1/4 of your actual damage (given a 25%, 25%, 25%, 25% damage ratio types), and maybe it is compensated from a bonus given by another damage type remaining.

Furthermore, stronger units tend to have Robotic instead of flesh, and protoshield or armor, so impact actually help you give more damage to the the bigger targets, where the damage bonus actually counts. You can kill butcher & crewman with alomost anything you want anyways :)