Navukh cites Kyiv as an example, but he should have avoided doing so, as a large number of players playing two matches in two days is more of an anti-example. I hope there won't be such chaos in St. Petersburg.
No one said that there was chaos there.
What makes you think that's what happened?
And did you look at the game statistics? Where is the large number of players who played two games? Here's the statistics: http://www.heroesportal.net/events.php?id=52
Four players played two games. Mainly due to the slow play of Volodymyr and Neo. But this can happen anywhere and it did not affect the determination of the strongest.