Most women in first-world societies don't have it that easy. In addition to doing the majority of housework and child rearing tasks they also have to hold down a full-time job. A lot of these women succeed in their jobs at a level of perfection and hyper-professionalism that I find completely baffling. None of this may be physically strenuous but it does require a degree of endurance that is quite astonishing. I don't see men having to do anything quite the same. That's not to say that what men have to do is easier because it really isn't, but they can slough off on the housework and child rearing tasks without any societal pressure or inner turmoil.
When it comes to ultra-endurance races the gap between the physical achievement of women and men becomes very narrow. Many of the longest ultramarathons are won by middle-aged women. I personally am capable of walking 30 miles in a day, sometimes more, and doing it over and over again for months. I don't even lose much weight doing this. In fact, I'm perfectly capable of gaining fat doing this. Gotta love being an endomorph (that's the biggest one, right? That's me.)
Female, 5'3", 48, Starting weight: 163lbs. Current weight: 135.
Starting bench press: 30lbs. Current bench press: 77.5lbs.