moving up in chess.com ratings

this is outrageous..

i have a rating of 1185  i beat a person with a rating of 1395

i check mated a person with a rating of 1395

and i only gain 10 points.. a rating of 1197..

is this some type of joke i can understand a 10 point increase if the person resigned  !!!!! i won  with a checkmate

so who ever is caculating this

go back to school for a subject called SIMPLE MATH...