Oh it's not that big an arena but do you think more people attended 4CC 2019?
I honestly couldn’t say but I think the Honda centre definitely has a bigger capacity (Google: 18,000+) so it might have looked more empty but had about the same amount of people. However that would be a guess.
I wouldn’t be surprised that it was mostly Japanese fans. Lots of directs flights from Japan to Helsinki and they are not that long.
Isn’t it 9hrs? It took me 3hrs to fly from London which felt pretty long so 9hrs would have felt like an eternity.