Take a step back and remember what level you are: 19. You've probably only played the game for a day or two. Follow Linthar's advice and just wait... There are dramatic changes around 30-35 and onward. Give the game and your class a chance.
What I am guessing is that you aren't even level 30 yet. Instead of instantly complaining about a game that has been out for less than a week, try playing and waiting until you're a higher level.
Okay... seriously? You don't think stealth has any beneficial mechanics in pvp? I think you need to play for a bit longer before making a huge statement like that... Wait until you're at LEAST 45. Also, I am 43, and i've been able to nuke down level 47-49 wizards easily. The key is getting the jump on them, and doing your…