DDG is marginally better, but its search indexing just uses Bing's (which is dogwater terrible), and it isn't kept up to date.
We are significantly more than that at this point, including that we've been working on our own web index for the past two years (https://insideduckduckgo.substack.com/p/duck-tales-why-duckd...).
But on top of that we don't get local results, knowledge graph, answers, sports, anything AI related, and many more essential modules from Bing, all of which collectively makes up a large % of the results at this point, let alone the vastly different UXs.
Hope that helps.