This photo has been posted on Facebook:

John playing at the other side of the world is a daring move. Especially since, as far as I know, he didn't have as much commercial success back in the 80s as he did here. I think the tour draws on, not his past, but present reputation as a musician and artist.
Anyway there was probably always a risk of very low numbers of attendance - 27's not that bad - could have been much worse! Out of that he may have gained 20-odd new fans, who knows?
It is a shame, but I guess its a risk he's willing to take, and John and Louis will still play their hearts out to 10 or 100 people.