Just write down the stats and martial prowess (or lack thereof) of your dad and make an argument on whether he can beat the dad of the user above you. I'll start.
My dad is 55 years old, he's about 5'8 and maybe 165 pounds so he's not a big guy. He rarely goes to the gym and sits in his office for hours every weekday; as far as I know, the only regular exercise he's been doing in the past few years is badminton. He has no fighting skills but I think he'll try to fight dirty if he ever has to.