"It don't think it's fair for me to comment on the internal workings of the NZRFU. I've obviously been two years out of it," he said.
"But we had a fantastic bid. We convinced the [International Rugby Board] that Australia and New Zealand should co-host the cup.
"It was on track and it was going to be fantastic for both countries. There was no misunderstanding then and I don't see what would have happened in the period since.
"The tournament is not happening [in New Zealand]. It's terribly sad."
Moffett "knew for sure" that the Australian Rugby Union could not be blamed for New Zealand's loss.
It was an interesting comment, as in his more recent role as chief executive of Australia's NRL, he would frequently be at loggerheads with ARU counterpart John O'Neill.
Moffett said he still believed the game was in good heart in New Zealand.
- NZPA