Agree with all the reasons that have been provided.
WT is very conscious of PR and they have a nice set of press releases for every Convention need, reporters will just follow that. With regards to the comparisons with other conventions, generally speaking they are looking at different groups related to entertainment, sports, politic and stuff like that; if they were to match the WT Conventions with another religious groups like Evangelicals they will find that the good behavior is very similar.