It wouldn't say it's worse than Skyrim.
Gameplay design wise, it's better. The combat flows better. The weapons are better balanced. The systems all feel more considered than Skyrim's especially with the later expansion.
Story and narrative, it's different, but probably on the same scale of bad. It's basically a story on the tier of one of the first 2 Mass Effect games.
Writing wise, barring a few translation errors(Blind Passenger is the one that typically stands out because it's one of the first lines in the game. German is a rough language to translate though. They did good, but not incredibly good.) The writing is a bit above Skyrim's level. But not a HUEG improvement. Voice acting though, especially in the English version, is a lot more distinct and feels a lot better directed. Though they did do a few cheap tricks to avoid tough retakes. Like looping the same clip during the intro dream.
Visually, it's modded skyrim, so it's a pretty decent improvement over basic Skyrim. Design in question though, it is consistent, clean, effective, and the clutter that you see at least in areas early on, is a step above the typical Bethesda clutter.
World design it's a lot better than Skyrim. There's a lot of consideration into how the game flows. And in that regard it's world is similar to New Vegas in design. Or a lower tier Gothic game. With natural barricades. And level ranges to each area.
Quest design, it works a bit better. The quests on average are on the scale of mid end Skyrim quests. With only a few blatant fetch quests. And only a few narrative wonders. If anything this is where the design flags. As it lacks until the end game the flair that Skyrim had from the very beginning. But that could be intentional.
If you play these games for the stories, then you're gonna be disappointed because if there is an improvement it's basically just in the level of writing rather than any improvement of concept, theme, or logos. If you play them for the world or design, that's where the improvement is. It feels a lot better, it plays a lot better. Everything flows well.