Most of the cumshots i have seen is just a guy jerkoff in a girls open mouth. Therefore it should not even be in a compilation that is named deepthroat cumshot. A deepthoat cumshot is just what it sounds like, the cock deepthroats while he cum
Concerning the japanese videos, the 1st stream is to prove that it's not fake. Some people like to have the begining of cumshot out of the mouth girl. But 75% of the time the guys are deep in the throat's girls just 2 seconds after the 1st stream of cum... so, for me, it's a deepthroat cumshot. You can hear also that the guy is cumming when he is deep in the throat's girl.
For other videos, i clearly indicated the time of each deepthroat cumshot. So i disagree with you.
My goal is not to make a compile with only the 10 sec of deepthroat cumshot. I keep some content but each video contains at least a deepthroat cumshot.
This is my point of view