No, not really accurate at all. KC is about 5/8ths the size of Ft. Worth, and the KC metro area vs the Dallas-Ft Worth Metroplex is about 1/3 the size.
That being said, I absolutely love both cities, and both have plenty to offer anyone. I really really enjoy the Kansas City downtown; it's very easy to get around on foot, even if you've not been there before. Power and Light is amazing for some free shows and an eclectic assortment of bars and restaurants all together in a Roman-style outdoor mall sense. I need to explore Ft Worth some more, but I've always enjoyed going to the stock show there. I have some friends and relatives that live down there and they always take me to a new place each time and I've never been disappointed.