They are NOT the exact same.
The Roman gods were made to be more focused around war, and have completely different personalities than their Greek counterparts.
uhmmm. they had the same gods but different names. they are the same appearence for the same thing and greeks and romans had basically the same beliefs overall
The Romans may have copied the Greek gods, but they're not the same gods.
If you copy someone's OC but change the name, slightly change the appearance, and change the personality, it's not the same OC.