Paladin DPS the worst of all classes?

[Ruminate]

Its just on auto-attacks, it doesn't affect skills compared to having neither oath up.

Sword Oath gives you an additional attack with 50 combat potency everytime you auto-attack.
Relic weapon's attack speed is slightly less than 2.5s.
GCD is 2.5s.
Think about it.

Lets say you use a 150 combat potency skill. If you add an additional 50 combat potency around the same time frame, what percentage did your DPS increase by?
Lets say you use a 200 combat potency skill. If you add an additional 50 combat potency around the same time frame, what percentage did your DPS increase by?
Lets say you use a 250 combat potency skill. If you add an additional 50 combat potency around the same time frame, what percentage did your DPS increase by?