That this must be "the truth" because of the organized organization; we are all taught the same thing at the same time and work wholly in unison, such a Holy Spirit miracle.
Doesn't every religion have some cohesiveness? Just because they aren't given the exact same talk, on the exact same day, at the exact same time, doesn't mean they’re not unified; many denominations all over the earth have fundamental doctrines that share beliefs between all it's members, and they do it without totalitarian rule.
The only thing JW "unification" proves is the incredible control the WTBT$ and GB have. They remove the free will God gives and assign a strict regimen followers aren't allowed to question; cause nothin’ says loving unification like insistent self-centered mandatory submission.