Eh, fighting a dad is a ridiculous way to determine suitability. Whether he treats her right and can take care of her is a better measure. Sure this is a gag comic, but it's still kind of off feeling.
Some of the strongest, richest, most famous, and smart guys in the world aren't a good match for a woman because they'll ditch her as soon as they're bored, and cheat constantly even if they "stay" with her. Real strength (for marriage at least) is strength of character. Especially if a woman wants a guy who won't ditch her as soon as he hits a mid life crisis and he sees that his wife has aged and hasn't lost all of her baby weight, has stretch marks now, the beginnings of sag / wrinkles, her hair is thinning out, her personality's bland and lost its sparkle because working + kids (or even just the kids) has tired her out into a hollow husk of a former human being, etc.
Also, it helps if he really actually loves the girl. That's the key. That dad's being really short sighted.