In Today's Blog: Consider the following
The planets in SU aren't wonky scaled wacky places like in WOY, and the apparent ease of space travel, abundance of other habitable worlds, and lack of explicit and permanent death being mentioned often makes the premise of a world's death far less impactful. For fuck's sake one of the episodes involves a planet imperiled by a galactus space puppy.
This isn't a BAD thing since I'm constantly sucking McCracken's dick about how good Wander is, but you can't hardly compare them.
There's one world that Humanity's got. The process of Gem colonization has been constantly emphasized as extremely traumatic. The effects of the war persist thousands of years later. It's jarring to see the radical alterations that have occurred to Earth's geography. Russia is a fucking crater.
Kindergartens are played up as utterly lifeless after millennia. The way of the Homeworld isn't cackling overplayed villainy but cold indifferent eradication. When has Wander featured him and Sylvia come across the long dead pieces of former friends mashed together into nearly mindless abominations. Is anyone filled with self loathing with the knowledge that their birth was the direct result of an enormous atrocity?
In Wander Over Yonder, planets being threatened with destruction is just another plot point, and lightened with copious amounts of humor and disarming villains. In Steven Universe it's completely serious, though also not the entire focus of the series.