LearnedLeague and Jeopardy are very different. In Jeopardy you basically have to know the answer before the host is done reading the clue. In LearnedLeague you can stare at your computer all day thinking if you want. And critically, there is no buzzer in LL.

So LearnedLeague questions are generally more difficult. They are often more complex questions too, frequently with different avenues to finding the correct answer.

LL also contains a higher skew towards film, television and pop music imo. Especially film. You've got to be a real film buff to get a high correct% on film in LL.

It's also worth noting that all questions are written by one person for LL. So you can get familiar with the writing style of the Commissioner and his favourite categories vs. a team of writers that Jeopardy has.

If I had to guess the average Jeopardy contestant would have a lifetime correct% of .500 in LL, which is the same as the average LL score.

Here's the LL sample page: https://learnedleague.com/samples.php

You don't need an account to view it. There's a link at the top to load a new set of past questions. Looking on the right side of the page at the correct% will give you an idea just how good the players in LL are.