Frenchy,
Perhaps not that non-JWs would need to have more money. But there is that possibility, plus the extra attention she would get from a non-JW.
For example, I would not sit next to my ex-girlfriend at the k.h. She constantly asked me to, but I didn't think I could 'get away with it'. She definitely wanted more attention. Her social status therefore wasn't improved much by dating me.
But back to the money issue; as much as my ex said money wasn't important to her, it was. (I was a poor college student as well as a poor JW.) She would say stuff like 'you need a new car'. On what budget?
Since 99% of men choose money as their primary currency of attention-giving, the majority rules. It is easy for a non-JW with a few social skills and a little money to work his way into a woman's heart. (JW boys may tend to have a little less of one or the other )
---will play cello for food

"All that is necessary for the triumph of evil is that good men do nothing." Edmund Burke
edited but still not making as much sense as I would like. he he