I've had little problems in Kylong Plains, but I did start a thread about it when I went into the Kunzar Jungle. I really had some problems there!
But a respec and a new weapon later (cudgel, expensive at 11 pp but still more than worth it with regular crits up to 1300 for instance), not mentioning the quest rewards that tend to replace armour pretty fast, later, I'm actually finding it fairly doable again.
In short, I find it a combination of just luck (sometimes you just get hit less and do more damage than others) with a careful examination of the areas to improve (armour and weapons) and also getting used to the mobs. They are harder than the older zones, I don't think many will doubt that.
On the other hand, I know of a 75 conjuror killing of a lvl 81 mob. It's all relative I suppose.