lulz.
they have a mutual understanding that it would be more honorable and a better show of skill if they fought using swords rather than just to simply shoot each other and have everyone die.
Also, your point is fraudulent due to the fact that Hit-Girl basically sucker punched them all by coming around the corner unexpected...whereas, all four men in the Hitman clip had guns drawn and saw each other from the very beginning.
Another thing, the 3 guys 47 faced >>>>> the 10 or so guys Hitgirl beat, in terms of skill.