Yes, exactly. (I keep forgetting, btw, that English is not your native tongue which is really unfair of me. I think because you express yourself so well.)

But let's consider a man like Ted and a girl like Buffy in the real world: without supernatural powers Buffy is a skinny and petite girl. What's her fighting chance against a man like Ted in a case of physical attack? Realistically he would win against her and that's it.

I think I mentioned in my meta that my mom is 5' 3"; and both her husbands were large, strong men, with substantial girth, much more so even than John Ritter in this episode although he's still pretty substantial compared to SMG. And watching the fight scenes in this episode I think back to my mom trying to defend herself. And bless her, she was a "scrapper" and I'm not making light - she wasn't strong and didn't have self-defense skills but she wasn't one to back down either. I never saw her whimper or cower (thank god).

And that frustrated her husbands in exactly the same way that Buffy and eventually Joyce frustrate Ted. The more I look at it, the more I realize how much this episode gets it exactly right.