Instead of your damage cap being 999,999 it is 1,004,999.
I have a weapon that has a bonus potential of Max Damage Cap Increase: +5000. What does that mean exactly?
Instead of your damage cap being 999,999 it is 1,004,999.
Chances are you won't be hitting 999,999 damage anytime soon. As a result of that, use the weapon which will give you a higher range (Which, in this case, will be the 113 attack weapon).
This depends on what the actual potential is on these items and whether you can equip them though.
Max damage cap increase is only useful if you actually hit the damage cap. It's also only really useful if you get something that increases your max damage cap by 50k+, since 5k damage is pretty negligible when you're doing 1m damage per hit.
bolt202/veil225/feint200