The study compares effects of activity by Jesuits and by Franciscans. Both are Catholic orders so the difference is not related to the religion, but to the focus on education in Jesuits missions
Maybe the jesuit order did very little or nothing to spread catholicism, as their mission was described to combat poverty and health issues. We can see this kind of faith divorced service in catholic missions and hospitals. They don't require anything in return, not even the time to sit through a sermon.
I do not think that you have ever encountered The Jesuits... They are as Catholic as can be.
In that times the primary goal of all catholic missions was to spread Catholicism, not to provide welfare to "pagans"