ELI5: Why do so many basketball games seemingly come down to the final seconds?

So when it comes to basketball in the US, you can compare NBA to NCAA basketball, and they are two completely different things.

I don't watch much NBA basketball, btw, so maybe there's bias here.

/u/Rockzilla78 posts the statistic that the average margin of victory for an NBA game is 11 points. But the average margin of victory according to this website is <= 5 points. That's a close game.

So a reasonable answer with no statistical analysis to support it is that the people who are watching our basketball games who are from Australia are seeing the NCAA tournament, where there are a lot of really, REALLY close games all of the time because the ceiling on skill is relatively low for collegiate sports compared to NBA basketball, especially if you're funneling more than 500 potential teams into one tournament of 64, compared to the 30 or so NBA teams that play each other maybe several times a year.

/r/explainlikeimfive Thread