I was referencing the double standard of the dismissal given to the officer's statements due to "people say all kinds of things in the heat of the moment or while in stressful situations.”
I have NEVER heard of a suspect's statements being dismissed due to "people say all kinds of things in the heat of the moment or while in stressful situations.” In fact, the exact opposite occurs - anything and everything they say, whether "in a stressful situation" or not is admissible and in fact often times crucial evidence used in their conviction.

If a suspect were to be recorded saying "I'm gonna kill that Mother - you-know-what" and then shot someone 5 times and killed them would you agree that that statement alone would qualify them for a 1st Degree Murder charge over a 2nd Degree? You know implying intent?

Double Standard. Civilian made the statement - used as evidence to convict.
Police made the statement - used to excuse the actions due to stress.