Christ forgives all sins equally. And our carnal minds can't grasp that truth, our own understanding is offended at grace that won't let us feel like our own efforts have ratcheted us up a few notches above worse sinners. We are sold on the delusional concept that we're not as bad as the next guy.
Don't you remember where it's written about the Pharisee who said, "I thank You, God that I'm not like other people - cheaters, sinners, adulterers. I’m certainly not like that tax collector over there!I fast and give a tenth of my income."
While the tax collector couldn't even lift his eyes up to God for he recognized his own weakness in the flesh. "Oh God, be merciful to me a sinner!"
Jesus said the tax collector walked away justified but the Pharisee did not. Because the Pharisee was confident in his self efforts and even in his judgment of the tax collector. But Jesus said he wasn't justified.
Our own understanding doesn't accept that. We're sure there's worse sins than others. And we are dead wrong. Jesus said if you justify yourself (say you're not as bad as others) you are spiritually blind. There ain't no getting around that. There is only one way to witness to others about Christ - ONE WAY - die to your own understanding and let Christ live through you. Abandon the logic of the world which compares people with people.
We have one standard - Jesus. None of us measure up to Him in our outward man. NONE of us. It is only within our hearts that Christ reigns that the fruit of His spirit might be evident to the world: Love, joy, peace, patience, kindness, goodness, faithfulness, gentleness and self-control.
Again, Jesus says to those who make claim that their efforts have earned them His kingdom, "Go away. I never knew you." But those who are not conscious of themselves but aware only of Jesus, the Lord welcomes them into His kingdom.
Don't you see that when we accuse another person of being worse than ourselves, we are saying our efforts make us better? Like the Pharisee in the temple condemning the tax collector? Jesus said that behavior is not justified.