Man, bloody fantastic chapter. Suddenly it all makes sense. So it wasn't really as a 'measuring stick' but rather to increase his capacity i.e. to complete his new ultimate move. That's so cool. I love how the parts we've seen before fit so perfectly with the new parts.

So, I wonder if that means Sasuke won't just beat Naruto and leave, but rather will he try to kill him to gain the move himself? The plot thickens.

Damn data collection, we need more chapters now!