Tanking problems

[Drhankeey]

Just started with the game, it's awesome for many - many things. But now I'm kinda stumbling on really annoying things.

I play a gladiator, the tank class and I did a dungeon run now, worst experience ever. The whole group went ahead of me all the time, attacked mobs before I had the chance to even reach em .. and the most shocking thing, I couldn't take aggro back. It's like whoever attacks first gets the aggro, spamming enmity skills did not help ANYTHING!

Further in the dungeon I realized the Arcanist had been using his red pet, which is a tank one, and did not want to change to his dps pet. Funny thing is, that enmity the pet gets is apparently ten times better then mine, he had most of the aggro (and I couldnt take it back) and it seemed to practically have replaced me to the point I was just /following the group around because I was just REPLACED.

What's going on here?!