They love to brag about being "the only ones who" do this or believe that. There are slight avenues to confirm or refute this, but it wouldn't mmatter. Once its said, those hearing run with it as truth and any clear discrepancies are from Satan's system.
I think this is a standard practise in the aftermath of any disaster now. JW's were the only ones prepared, organized, offering true comfort, aiding those inside or outside their faith, trusted by authorities, YADDA YADDA.
Even if they were the only ones out there, and they were not, offering stupid tracts and literature studies (not Bible studies) is not "comfort."