What's the winning move when Luigi just hits you back?

I noticed that the next thing that happens with Luigi is always that he attacks you, kind of no matter what. It goes like

Hit luigi - next thing that happens: Luigi hits you

Throw Luigi -next thing that happens: Luigi hits you

Miss grab on Luigi -next thing that happens: Luigi hits you

Luigi hits you -Next thing that happens: Luigi hits you

I don't know if I'm communicating the point well cause I don't know how to say it any other way. Like most characters when they use an attack, there's sort of a cool down on the move and they can't do another one for a little while. Against luigi it feels like the next frame after and attack is also an attack, with zero cool down. And if you hit him, the next frame is an attack from Luigi. Does that make sense? There's nothing to stop him from repeatedly attacking without any break between hits. Help

No, I'm not talking about L-cancelling