Thats the idea. If a high level takes a low level then they both get medium experience. If high levels go together then monsters give high exp but they are harder to kill.
+ if low level goes with too many high level then he/she dies off because she is too weak to be inside with casters etc.
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I know not with what weapons WWIII will be fought, but WWIV will be fought with sticks and stones. -Albert Einstein