Does being a p100 effect map rates?

I recently hit p100 on my main Oni and I have noticed that every day I go too Badham. I play several matches a day and on the weekends I play for most of the day(I know I'm a hard-core DBD addict) But at first I thought it was bad luck but I go there again and again with no offering once 5 times in 1 day and only on Oni. So does the game give p100s harder maps as a design feature? Or am I just repeatedly unlucky?

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