Johnson was given a comparatively short sentence, compared to serial nonces who prayed upon babies and little children. He deserved the punishment he got. He was rightly given a lesser sentence than some other offenders (think Lost Prophets singer) have been given.Johnson was given a long jail term for grooming and sexually abusing a child, and from a position of trust/power. Evidence shows victims are affected for life. Remember too the ensuing aggressive abuse the victim faced. Johnson also lied to the bitter end.
You can keep drawing contrasts as much as you like, but you cannot argue with the facts.
There is a difference of degree; you cannot argue with the facts.