Every mob is lvl 120 and I'm lvl 113?

Am I missing something - quest wise or otherwise or is it normal for every single mob to be max level, when starting out in a new zone - in this case Drustvar?
I practically aggro every single mob within a 100 mile radius…

If your character is Alliance, then no, you should not be encountering high level mobs at level 113 in Drustvar. When you visit the opposing faction islands for the war campaign, the first time you go there, they are level matched but if you return to that zone, they will be 120.

If it is an alliance character and you are seeing high level chars in Drustvar, it could be a phasing issue, so enter a random battleground, then leave, this should clear any phasing issue.

Sorry forgot to write that I’m currently playing Horde. I just started my campaign in Drustvar only to find out that I was massively out-leveld and outnumbered.

Did you leave Drustvar, then return to it?

Yes. I thought it might be a bug of some sort, but sadly the monsters are all lvl 120.

If you left Drustvar, then returned it will undo the level scaling. What may work is to go back to the Horde island, drop the quest and pick it back up again, hopefully then if you go back to Drustvar it will be level scaled again.

I’ll try that. Otherwise I’ll just have to wait until I’m max level I guess.