Assuming that the 2nd set would’ve been another 15 songs, some can say that the concert was 15 songs too little.
Then again, you can also say that it was 15 songs just right.
Just like real life, it really is all up to you. And when the announcement was made (at exactly 10:14PM) that they weren’t gonna continue, I could sense that people were trying to make up their minds exactly which side it would be. Too little? Just enough?