Am i so smart, or are.....

c'mon, its not rocket science... Just read. One month of hashing profit devided by the days of hashing is revenue per day, right?
If you know this, you can compare everything (ok. minus 1-2% diff. increase..)

NATURALLY you dont compare a month of mining on "A" with 2 weeks mining at "B"...  (did i really just explained that??  )