Several commenters rightly pointed out that I'm probably being selective in the way I've been portraying the Marvel Star Wars comics versus the Gold Key Star Trek ones. There's definitely more than a grain of truth to this. I still contend that, overall, the Gold Key Trek comics are, apart from their artwork, almost universally awful (and de-inspirational, if that's a word) while the Star Wars ones feel fresh and original, there's simply no question that there was a lot of silliness in the Marvel comics too.
Good cases in point are pretty much every scheme Baron Orman Tagge came up with in his quest to both defeat the Rebel Alliance and make Darth Vader look like a fool. I love the character of Baron Tagge and I have very fond memories for the issues in which he and his family figure prominently, but, if one were to be objective, you'd have to admit that it's no wonder the Baron never succeeded. His schemes were bizarre, even within the context of the much more loosey-goosey Star Wars universe.
For example, there's building a base with a giant turbine inside a gas giant:
The gas giant in question was "Yavin Prime," around which Yavin IV rotated. Apparently, after the defeat of the Death Star, the Rebels remained on the same moon rather than bugging the hell out of there. More strangely, the Empire, its Death Star having been defeated, just shrugged its collective shoulders and decided, "They're obviously too powerful to stop" and never went back with a huge star fleet to bombard the place from orbit. So, Baron Tagge decides to destroy the Rebel base by building his own base inside Yavin Prime, protected by this giant turbine that creates a safe pocket within its atmosphere but one the Rebels can't find or enter, thereby giving him free rein to attack Yavin with small squads of TIE fighters. Sure, why not? It's certainly no crazier than the Empire just ignoring Yavin IV entirely.
Then there was "Omega Frost," a mad science device that froze everything and which Tagge tested out on Tattooine (note the Imperial troop transport toy product placement in this issue):
He also tested it out in space, as you can see here:
Yes, that is really goofy. There's really no way around that.
Eventually, thanks to Tagge's crazy schemes, his family acquired a well-deserved reputation for being nuts and Darth Vader decides to take full advantage of this by using the Baron's little sister, who was living in seclusion as an intergalactic nun to preserve her innocence -- no, I'm not making this up -- as a trap to lure Luke Skywalker to his doom. You can draw whatever conclusions from that that you wish.
Vader's scheme doesn't work any better than Tagge's did, but at least he does manage to get the Baron killed in the process, so it's not a total loss. And while I do appreciate the fact that the Marvel writers at least had the gumption to kill off their new villains rather than fall in love with them and contrive new ways to keep them alive and coming back for more beyond all reason (unlike some writers I could name), the fact remains that, for all their good qualities, the Tagge family weren't exactly playing with a full deck. Giant turbines? Freeze rays? It's not exactly awe-inspiring stuff, is it?