Did you expect it to be higher or lower? (She said, by the way, it's a lower bound because they don't actually ask, so she might not know about all of them.)
I have one wild guess that may influence it, while I'm sure there's many other factors; selection. They pay close attention to the strength of the relationship that the founders have because one of the most common ways to fail is for the co-founders to have a fall-out. When you're a couple, you've probably been on holidays or other adventures together (look at the Lanyrd founders for instance, who I think started Lanyrd on a long honeymoon) or worked your way out of tough times and sticked together, there's clear evidence you have the potential to work together through stressful situations. (And who knows, perhaps they're less likely to walk away if it means walking away from their startup and spouse.)
I expected it to be lower but tbh I hadn't really thought about it. Selection is a good point though, it could be a good criteria for a strong co-founder relationship.
I have one wild guess that may influence it, while I'm sure there's many other factors; selection. They pay close attention to the strength of the relationship that the founders have because one of the most common ways to fail is for the co-founders to have a fall-out. When you're a couple, you've probably been on holidays or other adventures together (look at the Lanyrd founders for instance, who I think started Lanyrd on a long honeymoon) or worked your way out of tough times and sticked together, there's clear evidence you have the potential to work together through stressful situations. (And who knows, perhaps they're less likely to walk away if it means walking away from their startup and spouse.)