Exaggerated: Both teams are so happy about Pike's death, that the heroes and villains decided to lighten up with each other and have a truce.
Everyone gets a smile on their face after Pike dies, but they go about their business.
Pike is not a hated character, but his death goes unnoticed.
Pike doesn't actually die. Instead he departs into the sunset, and everyone rejoices as soon as he is out of hearing.
Pike was a Jerkass who annoyed both the hero and villain teams.
The Big Bad dies. The heroes rejoice for obvious reasons, while the allies and subordinates of the Big Bad rejoice because he was a Bad Boss, afflicted with Chronic Backstabbing Disorder or even mind-controlling people who didn't really want to work with him.
Pike was hated by both sides all along, but his death goes unnoticed.
Lampshaded: "That bastard's dead! PARTY AT MY HOUSE!"
Invoked: Pike deliberately acts like a jerk so his friends will celebrate his death.
Exploited: The villains knew that the heroes will celebrate Pike's death and will lower their guard during the festivities, so they plan a direct attack on the heroes' headquarters right after Pike's demise.
While everyone was glad to see him go, Pike is nevertheless properly mourned and respectfully buried.
Pike is a negative person, but the heroes find no reason to be joyful in someone's death, no matter how bad they are.
Discussed: "You would think those heroes would be a little bit more sad about Pike."
Conversed: "They certainly seem happy about Pike's death. Don't the writers know that a death is nothing to be happy about?"
Implied: Everyone's expression brightens when Pike dies, but no one says anything.