No, If you are taught to punch properly and actually practice it for best possible form you will have a very hard punch. Muscles do help to some degree, you can't be a total weakling, but at some point inhibit proper movement and commonly slow you down. Over muscular guys lose range of motion which reduces maximum impact of a punch. Ideally you want to develop the muscles but not over do it.

Chances are, a really muscular guy spends all his time on aesthetics (body looks) and no time on how to punch. So it is likely a muscular guy would just throw wild looping punches and just try to get a hold of you to use his strength.

Many are just show and crumble when they actually get hit.

If you're muscular, chances are, you are stronger. If you are stronger, your punch will be harder. That is, as long as you have proper form. If you're a smaller dude who knows what he his doing, and you fight someone bigger who isn't experienced, you will win the fight.

yes and no. you can be muscular, but if you dont have good form and dont use your hips it isnt going to do jack sh*t. at the same time, if you have large muscles you can put more force into it

Nope.

As mentioned no. No it doesn't.

I would think so if u want to win a fight

Not really.

nope. it is all abt technique.

no