If the GM team is stuck looking around for answers to questions and cannot answer them quickly themselves, can you expect players to sit around also and look at every monster in the same fashion?
Maybe I'm not the best to ask such things, I've never been to a ToH o.o
I think that, that is part of the challenge of the trivia trial. It's meant to be trivia, random stuff that your normal person doesn't know. Random things like "How much does ____ card increase your strength?" is par for the course. It's like Jepordy, but for RO. The average Joe isn't meant to get every answer right.
I am no average Joe. I've played this game for more than 5 years, I have the most zeny on the server, I have the most MVP cards on the server and I have other things to brag about that certainly make me one of the most elite players on the server. I'll still tell you:
Some people continue to excel on ToH Trivia even with the current "improved difficulty." Although there are no 25 perfect scores and indeed the average of the scores due to Trivia is lowered, some people's performance remains consistent at around 15 to 20 points.
Can't always be good at everything *shrug* (but you are more than welcome to try)