A good ending usually ties up loose ends, gives closure to the characters' arcs, and leaves the readers satisfied. It doesn't leave major questions unanswered.
Well, a key feature of a comedian caricature is exaggerating the physical traits or expressions that are distinctive of the comedian. It might also play up their typical mannerisms or comical gestures.
There's not much of a relationship. Jay Jay the Jet Plane is a specific cartoon show, while Kiss Cartoon is more like a source where you might find various cartoons. But it doesn't mean they are specifically linked or related in a meaningful way.
The comic strip might be considered terrible because of bad pacing, lack of originality, or maybe it just doesn't connect with the audience's expectations and preferences.