The "story" of Soarin' is not some fictional synopsis that takes place in an imaginary setting. Guests fly over real places that actually exist. Guardians clearly doesn't take place in a real-life setting. Flying over Disneyland in Soarin' and Rocket acknowledging Disneyland's presence in Guardians are two completely different things, and I wouldn't call Soarin's ending a breaking of the fourth wall.
I didn't call Soarin''s ending as breaking the fourth wall, but self-referentialism.
The story of Mission Breakout is that The Collector has surprise landed in Disneyland to show off his collection.