Because I played the game, and I know what he's talking about.
He is talking about how, when he's leveing in a Contested Territory, sometimes there are other faction players with much higher level than go and one shot kill you.
I honestly fail to see how this clearly points to WC3. Section? Please, you know what a newbie is? Level? Now that's laughable, when you talk about a level system you talk about an RPG. WC3 ladder system happens to have a level system, for ranking purposes only, wherehas WoW is not so.
In any case, and to finish it off, I am quite sure it is WoW because of
this.
Never assume something, specially when you are completly clueless of what you are talking about, such as you when you asked if people wouldn't need to be on the same faction to make duels, as if that was important. Not only can you get killed when doing a duel, but it also shows a complete lack of knowledge about WoW PvP system.
The thread creator is talking about WoW, that is fairly obvious, so do your job and move the thread, now.