I think factually PM IK migt be right. Jesus has only impact on the scriptural domain. That is strictly the Christian bible and theological works. However Prophet Muhammed PBUH impact spills well beyond the scriptural domain. We had a empire being formed that occupied land, a state that ruled a geography, that fought wars, that conquered etc thus even if you dismiss faith and it's consequences in the case of Prophet Mohammed PBUH nobody can ignore the very real history of Medina and the state that grew from there to go onto conquer and become a empire. Therefore it had real, hard impact on the temporal plane. That is normative history.
Which is not the case of Jesus. Sans the faith there is no footprint on history whatsoever. It's like invisible gravity.