Max Dmian wrote...
An Avenger X will theoretically kill your enemies 25% faster than an Avenger I and a Valkyrie X will kill enemies 25% faster than a Valkyrie I. A POS will be a slightly less pitiful POS and a good gun becomes a very good gun.
I never said anything else now did I?

Think outside the box for a second. Enemies do not have infinite health but is based on a fixed number, therefore 25% will never truly be accurate and numerical damage increase would be different from a percentual damage increase.
Take the Javelin for instance, on level 1 we say that I can 2 shot a certain enemy (with reload time in between) and on level 10 I can 1 shot the same enemy. Is going from 2 shots to 1 shot a 25% performance increase or is it more? A 25% performance increase from 2 shots would be 1.5 shots, so basically the Javelin levels up "faster" because you would be able to get the required numerical damage increase that would increase performance by 25% for this specific enemy at level 5. Other weapons you might be required to level up all the way to level 10 before you can be able to 1 shot this enemy.
Let me explain by giving an example:
- We have a Guardian on Silver (1350 health)
- We have a level 1 Javelin that deals 1236.6 damage
- We compare it with a level 1 Widow that deals 997 damage
- Both of the weapons can go through the Guardians shield without getting a damage penalty
- Both weapons need 2 shots to kill the Guardian
- At level 10 the Javelin will deal 1545.8 damage
- At level 10 the Widow will deal 1246.3 damage
- At level 10 the Javelin will need 1 shot to kill the Guardian
- At level 10 the Widow will still need 2 shots to kill the Guardian
The conclusion is that because the numerical increase of the Widow was not as large as it was for the Javelin it would not be able to 1 shot the Guardian. The Javelin could 1 shot the Guardian at level 5 already, thus it only needed 5 levels to gain 25% perfomance increase in this case while the Widow had gained 0% performance increase at level 10 against the Guardian.
If the Guardian would have had infinite health then both weapons would see a performance increase of 25% at level 10, but since it had fixed health the Javelin got a 25% performance increase already at level 5 but the Widow gained nothing.