Who would win

[platinummatt]

A lightweight amateur with good skills or a relatively fit heavyweight size person with little or no training in fighting ie doesnt know how to put weight into punch etc not good skill

[deliveryman]

A lightweight amateur with good skills or a relatively fit heavyweight size person with little or no training in fighting ie doesnt know how to put weight into punch etc not good skill

Are you talking about a street fight or boxing?

Boxing: a lightweight amateur should, if he has any decent skills. A person who doesn't know how to put their weight into their punch cannot use their weight to their advantage.

also, the lightweight has to be able to take a punch as well...

there's way too many variables man.

[yrrej]

The heavyweight, given a little gameness, would eventually corner the lightweight and beat him down in the boxing ring. It's too tiring for the small fighter to stay out of the way, especially if the ring is small.

[Easy-E]

Manny Pac would win.

[ferocity]

Manny Pac would win.

LOL