Are there any stats that tell how many of those baptized ones, were a result of the preaching work? How many were children or relatives of existing JW's?
No, but anyone can just look at the baptism candidates and see that the majority are younger ones.
They love matt 24:14..and theN they bring up how the preaching work is more important than anything else. More important than love?
Great question. Matt 23:35-38, John 13:34, James 1:27, 1 John 3:11-18, 21-23, 1 Cor 13:1-3 (<-- especially this one)