People with world class accomplishments in science get recognized by other scientists.
But people without world class accomplishments can still have expertise in the field, and credentials are a way to recognize that.
Open public debate can serve as a great means of comparing 2 sets of diametrically opposed scientific claims such as geocentrism vs. heliocentrism. It is very rare that someone, regardless of how great their credentials are, has shown a willingness to publicly debate Robert Sungenis on geocentrism. Those with credentials sometimes rationalize their unwillingness by asserting that Sungenis either doesn't have credentials or that his credentials are fake.
Others will refuse the challenge to debate by trying to dismiss geocentrism as being more or less equivalent to flat earth and thus a subject not worth engaging someone one. The excuses are endless.
I submitted a question to Fr. Robinson 3 days ago via his Quora link asking him if he would be willing to accept a public debate on geocentrism with Robert Sungenis. I also asked him via his direct contact link on his website. I am not holding my breath for an answer, but if I do I hope to be able to post it verbatim on this thread and on another thread where I mentioned the submission of my question to Fr. Robinson.
In considering whether to debate Robert Sungenis, hopefully Fr. Robinson who no doubt prides himself on being a Thomist will draw inspiration from the Angelic Doctor who was one of the greatest public debaters of all time.