Big Oktoberfests

A friend of mine is organising a trip to the Oktoberfest in Hanover rather than Munich, which is our traditional destination for such things. In an email he pointed us to the Wikipedia Hanover page which claims:

Every year Hanover hosts [the] Oktoberfest Hannover, the second largest Oktoberfest in the world (beside Oktoberfest of Blumenau).

I'd never heard of the Oktoberfest of Blumenau so I followed the link. It happens in Brazil(!) and its page claims:

It is considered the biggest German festival of South America, and the one of the biggest Oktoberfest celebration along with the Kitchener-Waterloo Oktoberfest and after the original Oktoberfest from Munich.

So this page seems to claim, although the wording is sloppy¹, that it's third biggest: after the Kitchener-Waterloo fest and Munich. No mention of Hanover.

Moving on to the Kitchener-Waterloo Oktoberfest then. Its page claims it is:

Based on the original German Oktoberfest, it is billed as Canada's Greatest Bavarian Festival, and is the second-largest Oktoberfest in the world.

So where does this leave us. Well the Wikipedia page for Munich's Oktoberfest is taking no prisoners, it says:

It is one of the most famous events in Germany and is the world's largest fair, with more than 6 million people from around the world attending the event every year.

Not only the biggest Oktoberfest then, but the biggest fair in the world.

I'm now thoroughly confused.

Well, let's look at the claimed figures from the various pages. It seems to come out like this:

OK. I thought I had it clear in my head and Hanover was number two, until I went to Wikipedia's Oktoberfest celebrations page and there it is. It clearly states, referring to Hanover, that:

With more than one million visitors each year, it is the third-largest Oktoberfest in the world.

So I hope that's clear ...

1. I'm amazed no Wikipedia editor has yet marked "It is considered" with a "by whom", although the whole article is marked as in need of cleaning up.