Any char can be the "best" as long as you know to play it. There's no best class for pk, you either know to play it or not.
All classes work but mystics have a major advantage.
DAMN True
Not really, for example Psychic versus Mystic, no matter how good you're you'll still lose against a Mystic with the Psychic.
NO but not all the time i'm a Psychic and i can win vs Mystic
Cleric is the best
No, you can't.
Try to beat my absorb soul spamming mystic in 1v1.
Mass: ArcherSolo: Archer/Wizard/Sin1v1: BM