In what universe is this “trying to pull a quick one.”? I think everyone understands it’s a global launch on the 26th/27th.
Referring to the 27th is probably the safer route given how people act on these forums (OP is Exhibit A). If they refer to the 26th you know there are going to be players in Europe screaming on the day before launch “YOU PROMISED WE COULD PLAY NOW!!!”