Nonsense as long as they compare like with like how strict the measure is has no effect on the growth rate.
Wrong. Most JW growth comes from children of JWs (also a source of inflated Bible Study stats). If they were counted as members, actual growth by conversion would be extremely reduced.
For example, let's say a JW congregation has 50 'active' members, 20 non-publishers (usually children) and 10 inactive. During the year, 5 of the children become publishers, and they also make 3 converts. There are 83 people in total, but the initial number of publishers is 50 and the final number is 58. Growth rate is 16%. And if 5 of the inactive people get roped into a 'special campaign' (e.g. Kingdom News), the growth rate goes up to 26%.
In a congregation of XYZ church, there are 50 regular adult members, 20 children and 10 lapsed members. During the year, they make 3 converts. There are 83 people in total. The initial members count is 80, and the final count is 83. Growth rate is 3.75%.
But both groups have the same number and distribution of adherents.