My realm was down early for extended maintenance so I picked a random new realm and rolled 5 pallies - at level 4 I couldn't kill Hogger alone - I can kill 1 or 2 regular level 10, I killed 1 level 12 "rare" guy but not hogger - this is with the level 1 gear - I grouped with a level 7 who tanked and I healed him and dps'ed and we downed him - but I think with gear you could do it at level 4; or maybe with other combo like 4 dps and 1 healer - I'll try again 1 more time and then try at level 5 - it's a pain to run back from cem when I loose 1 guy or 2 during approach - I should have done that somewhere I can rez...