You can assume that but you can't generalize it as if that's the only reason women look for older men. It' really depends on the couple tbh. It doesn't always work but neither is there a guarantee that it will work if you look for someone "your age". I think the important thing is to look fro someone that fits what you will get along with and be happy with. As long as you're both of legal age, it just becomes a number. Everything else is about maturity, interests and attraction.