For anyone considering using the protection warriors, They play exactly like arms WoTLK Gold, with the exception that it doesn't really change stances all that often, since you're carrying a sword and shield out all the time and you have the majority of your skills that can be utilized in a defensive stance that is, you can sleep on your team as well as yourself and you're definitely stronger than arms.
You do have silences and stuns that give you good CC and burst but you're consistent damage is pretty small compared to armour and you're not equipped with Mortal Strike. It is definitely a nice one for extremely specific prompts that, if executed correctly will be a great choice. Next up is the warlock, this class has two primary PvP specs which are destruction and affliction. Both have distinct playstyles so let's start out with the affliction. This specialization has a ton of control while also having a lot of dot damage.
The affliction warlock truly is an unique style of play, as you're mostly not focusing on one target. The goal is to get your unstable affliction and corruption on as many targets as you can by using the correct curses. You are making sure that the opposing team from gaining momentum through things like curse of tongues, curse of exhaustion, fear of death, toil, etc. It is also important to be aware of your pet's health, as keeping the animal alive is vitally important.
Your pet not only to create magic on you and teammates but you'd be able to purge and possibly lock the enemy team not to mention the fact that it minimizes the damage you incur by 20% as well. Why you would want to play as an condition Warlock would be because you are a multitasker and enjoy having lots of control to offer will also rotting people to death with your dots. Since you have left tap you also do not run out on mana.
Why you shouldn't take on the role of an affliction warlock because they are pretty squishy and the only real defensive they possess is their portal which if improperly used or placed could result in your demise. You also wouldn't enjoy the speck if like having to focus on more than one thing at a time cheap WoTLK Classic Gold. When you were fighting a good affliction, warlockor your entire team will die as no one is able to cast and when you attempt to generate pressure your DPS isn't just sitting in fears but as well, that fear could be covered with unstable afflictions.