There are 3 pvp brackets, no level 10 is going against a true lvl 80. 10-44, 45-79 and 80. All brackets bolster you to 80 in regards to stats. At level 15 you have nearly all your abilities, granted your skill tree is lacking a great deal but you still are competitive.
Using your analogy a 24yr old pro boxer trained to fight, if a 24yr old couch potato starts a fight with him and gets torn to shreds who fault is it? The guy who practiced to be a fighter or the potato? They both had the choice to train to fight, one spent time doing so, the other decided to fight without. As I said before, everyone had the same opportunity to train for pvp, from 10-79, before entering max level WZ. It absolutely isn't the fault of the guy who practiced pvping that someone else is bad.