I don't think you can claim that the crusade was a huge success, the crusade achieved its initial goal, yes, but that almost literally the only 'positive' thing it accomplished. Considering the end result in the longer term is that Terran gets destroyed anyways, (just in a more prolonged fashion,) the rift in the church's diverging forces are exposed and there is a break in the Astroist federation in the north along with a good amount of disenchantment with the church, I do not think you can make a claim that the crusade was a "huge success".
