heavy hitter vs personage

heavy hitter and personage both are nouns.

Word	Noun	Adjective	Verb	Adverb
heavy hitter	Yes	No	No	No
personage	Yes	No	No	No

As nouns, personage is a hypernym of heavy hitter; that is, personage is a word with a broader meaning than heavy hitter:

heavy hitter: an influential person who works hard to promote the causes they are interested in
personage: a person whose actions and opinions strongly influence the course of events

Other hypernyms of heavy hitter include important person, influential person.

heavy hitter (noun)	personage (noun)
an influential person who works hard to promote the causes they are interested in	another word for person; a person not meriting identification
	a person whose actions and opinions strongly influence the course of events