@theredeemer i am fully aware of the statistics. I live next to a LDS Ward. Active membership within the mormon world is about 5 million. The number you mention is inflated since it includes inactive members and everyone who is baptised no matter if you still show up or tithe or not.
If JW'S would count like that they would exceed 20 million (on the memorial alone they had 19.5 million attendants this year)
Everyone who is really interested in this subject Mormons vs JW's and growth statistics should read some studies and essays of this LDS Mormon website
One of their conclusions is :
The percentage increase in the number of Adventist and Witness congregations has dramatically outpaced growth rates for the LDS Church in nearly every nation where all three denominations operate.