Dota 2 patch 7.38b has tweaked and changed things up ahead of the next major tournament. Here's a breakdown of the changes: ...
From a viewer's point of view, I can see how it's fun to watch something like this. From another perspective, the 1v1 is not really competitive Dota 2, so it's a bit of a random way to decide a tie.
Dota 2 update 7.38 introduces Artifacts and Enchantments as new mechanics of the Neutral Items, where players can now pick them separately.