I play with a guy who roled a hunter--he can pull up to 47% crit, with DPS ranging between 800 and 1300, not on a berserker buff or anything of that sort. I would argue that if there is any class that's overpowered, it's a hunter wearing crit gear.
When you can aimed shot another hunter dead in one blow, there's something wrong with that. I pulled a 3600 aimed shot on a hunter followed by a 1500 multishot, and a 1200 autoshot all in the same second. What's wrong with this picture? This happens all the time. I have several screenshots of him being 200 kills with 0 deaths in only about an hour and a half of AV play.
To make it even worse, I run around in a full epic priest healing him in AV or if we pvp out in front of Ironforge--we're well loathed.