From FAQ:
Q: What is the biggest factor in my fight rewards?
A: The biggest is how your PR compares to the score of your opponent. If it is smaller, you get a bonus for fighting tougher people. If it is larger, you are penalized for fighting "lowbies."
(The top 10 Characters are exempt from the lowbie penalty.)
Well, my question now is, is it top 10 of score, PR or MPR that determines if you get penalized.
From the answer I suppose it is PR, but I'm not sure. I also think this FAQ was written before MPR was introduced.
Anyone know more about this?