British Columbia

We need there to be enough of a difference between the punishment of charges, to prevent escalation strategies.

Dead bodies can't go to the police. If the punishement is the same for manslaughter as whatever it was the crimal did, killing them afterwards becomes "the correct move" in a lot of situations.

As for "he didn't even serve 7":

In Canada, each day you spend behind bars before you are convicted counts for 1.5 days of time served, this is to try to curb people being held "just because" by the police. You are up for Statutory realse after 2/3s of your sentence which is kinda like parole, having strict rules and needing to check-in with an office.

So a 7 year sentence in Canada is 1703 days in his majesty's hotel, and 852 days with release conditions.

This article says that he only needed to serve 2 and a half years because of the amount of time he had already served pre-trail:
https://www.cbc.ca/news/canada/british-columbia/homeowner-handed-7-year-sentence-for-baseball-bat-attack-that-left-18-year-old-with-life-robbing-injuries-1.4875587