Well, technically, I did not make that criteria. It was just I read from other analysts using it.
I do think I should try an expand the list, perhaps to 2 minutes and less, for situations like LeBron and Tony Parker earlier in the year. I know 82 games will do better job too.
Yea, if the other team doesnt respond to your gametying/to take the lead shot and if your team doesnt score anything more aswell it should count as a gametying/gamewinning shot... but ofcourse to do it with under 24 sec is i guess considered more "clutchesque"