I also count any that started developing at all, so only clears don't count. Bloodrings count against. You get a skewed representation if you only count those that make it 10 or 14 days.
If you did that you'd miss a LOT of information about what your birds are producing.
If I set 24 eggs but only count those that are still going at ten day, and 6 are quitters. And then I lose three at hatch. If only those three are counted I think my hatch rate is hugely different from it's actual rate.
And I'm not asking questions I should about my temps, the bator's humidity, whether I disinfected thoroughly, whether I've got one or more animals producing weak chicks or deformities that never see the light of day.
While we might set different criteria during one of our "competitions" for uniformity of comparison. If you're evaluating what you produce and hatch, then you go with real numbers. Not comfortable pretense.