What say you?
Can you clarify the question?
Are you asking who is more pious, as in which gender is more connected to g-d?
Or who keeps more of the commandments?
If your question is the later, I dont really understand how you expect there to be an answer or for anyone to really know. Also, why do you assume one gender is more "observant" than the other, gender shouldn't play much of a role in level of observance.
I'm sure there are some women that are more observant than men and vice versa.