The key to understanding this is the difference between equivalency and equality. Everything in creation exists in a hierarchy. We have inanimate objects, then plants, then animals, then humans. Within the human race there is further distinction. Some people are smarter. Others are more athletic. Still others are better artists. A person who is in good shape, but not exceptionally brilliant may find fulfillment in a job such as a construction worker. A person who is not in good shape, yet has skills at visualizing and solving problems might find fulfillment as an architect. Now, if I were to ask you, which is a better job, a construction worker, or an architect? Which would you say? I think most people would likely say architect, because they make more money, require more specialized skill, and do bigger and better things. But both jobs fulfill both people equally. An architect may be above a construction worker hierarchically (i.e., it is superior), but that doesn’t mean that the construction worker has less dignity or importance.
Apply this to vocations. A person who is well versed in scripture and has a knack for counseling may be called to the priesthood. A contemplative, peaceful person may be called to religious life as a Brother or Sister. These vocations are superior because they provide more opportunities to serve and contemplate God. They are retreated from the “real world”. They are as close to heaven as you can get while still living. But they are not for everyone. They will not fulfill everyone. Someone who hates books would not make a very good priest. Someone who always has to be doing something would not make a good monk. Yet, in whatever they choose to do, while it serves God, it is an inferior method of serving him than religious life.
I hope this makes some sense. I guess what I’m trying to say is that we all are made for God. He made some of us capable of taking on higher tasks than others, yet He made each of us in such a way that we will be fulfilled in the tasks we are called to do for Him.