Most Helpful Girl
Let's use a party analogy. Say you get invited to this huge party. It's at a popular nightclub. You get there and your name is on the list. So now you think all is well and you're about to go partyyy. But before you can go in, you have to show proper ID. Doesn't matter if your name is on the list or not. No ID, not entry.
Looks can get your name on the list no problem. But your ID what gets you into the party. If that makes any sense. It did in my head lol. I'm running off of like 9 hours of sleep since Friday morning.2
Most Helpful Guy
I say they are equally important because they are both necessary in a relationship.
Looks will give you initial attraction and personality keeps the attraction going long term. If someone has great personality but also is one I don't find at all attractive, chances are they'll be stuck in the "friend zone." Rather, I'll still want to be around them because they're awesome, but I wouldn't want to really date them.
Likewise, if someone has great looks but not great personality, a long term relationship wouldn't work out. The disagreements and anger would build up and we'd split up fast. No one wants to date a girl who is a total jerk no matter how attractive they are.
However, for looks, it all comes down to a threshold. It is like a certain level of attractiveness they'd have to pass. I guess that would be called "standards." Once they pass the threshold for minimum attractiveness, they are clear in that regard.
A similar thing happens with personality, though it is harder to discover personality all at once. One can't simply look at a person and go "yep, their personality SUCKS..." hence why we date before we go into a long term relationship. We figure out their personality before jumping fully into a relationship with the person.1