It's my anecdotal evidence, but Unity games run like shit. Whenever I hop in an Indie game where they used Unity, performance makes no sense. An example of this is the og Hollow Knight, which needs way more resources than it seems it would. Now that Godot games are becoming more widespread, I have never felt that a game made in Godot was "heavier than I expected it'd be", often the opposite. Maybe it's just that most developers using Unity don't know how to optimize in that engine... But it's weird. UE5 I can usually at least see where the performance bloat is coming from, but Unity just makes no sense.