It is better to prioritize looks over personality when getting married

Looks are an objective indicator, so there is no risk of being blindsided.
Personality is a factor with high variability; you never know how it will change during dating, marriage, or after childbirth.
If you compromise on looks to marry someone for their personality and then get betrayed, it feels truly unfair.
If you married based on looks, you wouldn't even feel wronged. This doesn't mean you should marry a woman with a terrible personality.
The premise must be that their personality is within your range of acceptance. If you marry someone knowing they have a terrible personality, you only have yourself to blame.