So you're asking people if they're qualified to follow their religion? Or if their religion is qualified for them to follow?
I think Jesus had credentials because the recorded prophecies about Jesus fit Jesus.
So, I find Jesus was qualified because he stuck to Scripture as the basis for his religious teachings.
Jesus taught at John 17:17 that God's Word (Scripture) is religious truth.
The Jewish genealogical temple records also showed that Jesus was qualified to become Messiah.
So, Jesus' used logical reasoning on the old Hebrew Scriptures by often prefacing his statements with the words, " It is written...." meaning already written down in Scripture, and Jesus logically explained them to us, so following Jesus as he taught to be followed to me would qualify a person because of the credentials Jesus has.