overrate
verbUK /ˌəʊvəˈreɪt/
US /ˌoʊvərˈreɪt/
To think something is better than it really is.
Many people overrate how much they can get done in one day.
OTHER MEANINGS
2. To give something a higher rating or score than it deserves.
The judges overrated the singer's performance and gave her first place.
3. To have too high an opinion of someone or something.
He tends to overrate his own cooking skills.
4. To praise something more than is fair or accurate.
Critics overrated the movie, so I was disappointed when I saw it.