Well it is 'easy to believe ' in Jesus. But it's not just 'repeat a prayer after me' ..but under conviction, from the heart calling for salvation.
Romans 10:9-10. John 3:16, 5:24, 10:28, Ephesians 2:8-9.
I think where Campus Crusade goes wrong is the initial leaders who were sound in tge faith are now long passed. Also they become an entity in themselves when in the past they were mainly focused on linking people to churches rather than being a church themselves.