That is not correct. Chillul Hashem is any desecration of G-ds name....Including attributing to G-d evil deeds or wrongdoing. To say that G-d would engage in human sacrifice, such as in Jesus, is a chillul Hashem.
And, you've answered your own objection unawares in pointing out that self sacrifice for the glory of God, a kiddush Hashem, is actually what occurred with Jesus Christ.
I pointed out no such thing. Martyrdom for the glory of G-d does not include a premeditated human sacrifice as if he were an Asham blood sacrfice. It is not permitted for a human being. That is why G-d hates it. And says so plainly. Each man is responsible for his own sin Ezek 18. There is no need for a god-man hybrid savior.
For someone to say that Jesus willingness to kill himself as a sacrifice for all mankind (or anyone) is permitted by G-d, goes directly against scripture. It is a chillul Hashem, you are saying that G-d behaves like the pagans who do engage in human sacrifice. G-d copies the way of the pagans he despises? G-d hates it when the Baal worshippers kill their innocent sons and daughters...including infants But copies these people? No...no way.