Jesus instructions to the 12 are completely contrary to the manner of the preaching work of Jehovah's Witnesses. How fitting that the chapter completely ignores this explicit instruction -
Do not be transferring from house to house.
At any rate the twelve were specifically called out to preach the Good News. That is why they were named "apostles" or "sent ones". They were to be sent out to preach, this was their assignment.
Here is what Acts 6:1-6 says regarding them -
"In those days when the number of disciples was increasing, the Grecian Jews among them complained against the Hebraic Jews because their widows were being overlooked in the daily distribution of food. 2 So the Twelve gathered all the disciples together and said, "It would not be right for us to neglect the ministry of the word of God in order to wait on tables. 3 Brothers, choose seven men from among you who are known to be full of the Spirit and wisdom. We will turn this responsibility over to them 4 and will give our attention to prayer and the ministry of the word."
They understood that is was their primary responsiblity to preach to the Good News as Jesus had trained and instructed them. In contrast others didn't necessarily have that same task. This is further testified by one of Paul's letters where he says that some were apostles and some were evangelizers.
The apostles apointed responsible men to oversee the work of looking after the poor and the widows while they continued in their ministry. In JW-land everyone is required to preach and no one looks after the poor and the widows are left to rot in nursing homes.