I haven't seen one instance of God saying that one sin will have a lesser penalty than another. I have read this scripture...
Romans 3:23 For all have sinned, and come short of the glory of God.
When judgement day comes (and it will) God won't be asking for your 'nuanced' interpretations.
There are MANY instances of God saying that one sin will have a lesser penalty than another in the Bible.
For example the sin of bestiality is punishable by death, but the sin of stealing requires a person make restitution.
Furthermore the penalty for thievery to avert hunger was not as severe as stealing motivated by greed.