To be honest I don't care at all what people with no experience have to say in those low level dungeons. I was leveling my WHM when I was in brayflox normal mode and I healed the tank Dr Doctor I remember his name and I got aggro of all targets. I asked nicely to work more with flash since he was a paladin and he told me to check my rotation?

I explained to him that I only was casting 2 normal cure and I got aggro but he insisted it was my fault.
Remember that we have ALL kind of players in this game so you have to deal with that.

We had another group in which the DPS (monk) was marking targets and not letting the tank get aggro or pull, he just told the tank that he was the DPS and he is the one who should be marking and the tank SHOULD take the aggro from him.