Group Leveling problem

[Titanium]

As far as I know, even if the low level character is the party leader, the mobs will still be lvl 70 as the party member is lvl 70.
Each character has its own drops and it'll drop lvl 1 gears for the low level character.
Yes right now it's dying very often when the character is low level. It'll die less frequently as it levels up, if you leave it fight overnight it'll still be leveling towards lvl 70.