Guild Wars 2

Sometimes, I enter a dynamic event very late (especially for escort event) and can end up getting a gold participation even though I was only there for like 3~4 minutes.

whereas in some encounters, I would only get silver participation even though I was there, fighting the target from the very beginning and constantly supporting other players throughout the fight.
I knew I was there the whole time because when I first ran into that beast there were no other player near me so I waited for a while until others show up. I was the one initiating the fight and fought very hard for 20 minutes. I shouldn’t be getting silver participation for this much effort.

I’ve come up to a boss that was almost dead, got one hit in, and walked away with a gold.

Other times I’ve been there since the start and gotten a bronze.