Don't get me wrong, the damage seems quite nice, though if it's a 1v1 it seems like I can't cast fast enough to keep up with their DPS and it's game over for me, like some class with ranged just pummeled me with DPS so quickly I could barely get off 2 spells before he killed me and the damage those 2 spells did was laughable. I do stick with the pack nuking, but I don't really feel like I am contributing much to the fight. Maybe it will change when I unlock more spells and get some gear.
EDIT: Yeah Gnjus I had PvPed some in Nordland, guess I need to get into a party there to get more XP.
I dont even look at the xp bar i dont sweat it at all. I just join a warband, fight, cap some objectives, fight in scs etc, and then im like: oh, a lvl, sweet. Always join warbands on lower tiers. Only on t4 is it better to roll solo or in a tight group killing stragglers for maximum renown gain.
As for BW, They are arguably the most op class in the game. They are kinda week at the beginning because you have the drawback of being very squishy without the dps that balances it.
In retail i have seen a good BW in a guild group with a tank protector and a pocket healer wipe a whole pug warband by himself.