Hey there,
I have downloaded the app today and i played with the calculator.
from what i understand, and i have attached a screenshot, i would be able to reach M+ Raiting for 1200 or more while only running lvl4 keys this week. (8*162 = 1296, 162 being the score i got for Uldaman in my lvl 4 key) yet the app assumes i can not.

Playing with the numbers a bit, it looks like this is still taking in the numbers from Season3. Am i correct here?

Thanks for the app. it is a neat thing.