Does anybody receive the same amount as WTM promices? What pool do you use? 
No. Move to Ahashpool or HashRefinery. Use NEMOS miner to see what brings in most cash.
For me it's Skein and Blake2s now.
whattomine is a snapshot of current difficulty and price of the coin - during the day all move up and down, so the results move with them
you should focus long term or keep changing the miner every hour or so