In the parable of the rich man and Lazarus, the rich man went to hell simply because he ignored Lazarus, while God has forgiven murderers such as Moses and David, and Jesus took the thief crucified next to him, to paradise that day.
Jesus said it was harder for the rich man to go to heaven, why did he not say the usual we here today about the crazy murderer, because the rich man never understands what he does is sinful, therefore he does not repent or ask God's forgiveness, therefore he goes to Hell while the murderer who hates what he has done because he is sick , and asks God to forgive him is in heaven.
The issue is we cannot understand things as we cannot see them as God does. Thus we were instructed to forgive, Love your enemies,Judge not, lest you be judged.
All sin is equal because all sin can be forgiven.
King James Bible (Cambridge Ed.)
Verily I say unto you, All sins shall be forgiven unto the sons of men, and blasphemies wherewith soever they shall blaspheme:
Here is what a learned book says about the passage you Quoted,
Matthew Henry's Concise Commentary
12:41-53 All are to take to themselves what Christ says in his word, and to inquire concerning it. No one is left so ignorant as not to know many things to be wrong which he does, and many things to be right which he neglects; therefore all are without excuse in their sin. The bringing in the gospel dispensation would occasion desolations. Not that this would be the tendency of Christ's religion, which is pure, peaceable, and loving; but the effect of its being contrary to men's pride and lusts. There was to be a wide publication of the gospel. But before that took place, Christ had a baptism to be baptized with, far different from that of water and the Holy Spirit. He must endure sufferings and death. It agreed not with his plan to preach the gospel more widely, till this baptism was completed. We should be zealous in making known the truth, for though divisions will be stirred up, and a man's own household may be his foes, yet sinners will be converted, and God will be glorified.
It is easy to take things like that literally, just like the one about taking up swords is always misconstrued , as the Lord above all else taught that God wants MERCY. He wants you to humbly admit your sin and make an effort to change.Thus you can be forgiven any sin.