overestimated
o-ver-es-ti-mat-ed
verb
Judged something's value, size, or importance as greater than it actually is.
"Her influence was greatly overestimated by the media."
Thesaurus
Synonyms: overvalue, overestimate, overappraisal, overvaluation, overestimation, overrate, overreckoning, overrating
Antonyms: underestimate, underrate, undervalue