“Mission legs” is a myth.
You proved nothing.
Real research would have collected data all athletes who played for a year on any team anywhere and then left for a mission. There are so many other variables that could and would apply to “prove” or “disprove.”
Sure, others have not done the work, but that doesn’t mean you are right.
If you are serious about answering the question you would do a whole lot more digging and I close those who did not continue playing career after the mission due to physical changes as result of the mission.
It would include all levels of play post high school including JC, and lower level divisions.
It would include info on which mission, if it were car, biking or walking and a whole lot of other info.
Otherwise, you’re just manipulating the data to try to make yourself look right.