They're the slowest in term of attack speed among the three warrior classes, they also require constant focus to keep up berserk, which is not ideal while you're mobbing in raids. There are also factors that you would need to take into account here such as logging off during raids pretty much every single time you get seduced, seeing as you're raiding with 15k hp and hence have a much lower probability to survive as compared to hero and paladin. And in doing so, you're not able to mob, which makes for a really bad mobber. This applies to every single raid that requires a mobber. In comparison, Heros have consistent damage output which means far superior mobbing while exerting least amount of effort and they also hit a lot quicker. Whereas Paladin's can just Heaven Hammer and clear the entire wave of mobs without breaking a sweat. In term of pushing and pulling mobs, they're all similar. And as for stunning mobs, Hero and Dark Knight have AOE skills that allow them to stun the mobs while paladin do not. They do however have a skill that allows them to stun the mobs in front of them. But really tho, how often do you stun the mobs? I hope this provide some clarity.