It can get frustrating, as you get nothing for losses. The general rule for forfeits is that if the match lasts over one full minute, even if the opponent forfeits, you still get full XP and rewards. If the opponent quits before the one minute mark you still get the win, and a chance at a stone drop, but no XP or Lesser Charms. I feel like Pet PVP is the real mini-game, so it's fun for me, but it's not your cup of tea, it make be annoying. At those early levels though, sometimes I got well over a full bar of XP for a win.