How is it actually possible to win a purely text based RP anyway? 

Sounds like the only way to win is to write so well that your opponent is like "wooow, i'm totally giving this match to you and not being an ass and stretching this out into ad infinitum" xD

I haven't played it, but based on my general RP experience, I have a hard time imagining how a fight between two equally stubborn and competitively-oriented participants could EVER be resolved :o