The Percy Jackson show is better than the movies, but I know why you might disagree.
The Percy Jackson show is better than the movies. It's a better adaptation, it's a better story, and it's visually better. There are some changes to the story from the books, but I believe they were justified changes. I know, however, a lot of people disagree, and I believe I know why.
Reason 1.) I think a large reason is how fun the movies are. They're awful adaptations, but they really exciting. The storyline is really weak, but some of the jokes land pretty well, and the fight scenes have moments that feel tense. The show feels very bland, a lot of the time. If I had to put a reason behind this, I'd say it's Rick Riordan's hubris. He was really upset about the movies, and I can understand that because Fox made him promises that they broke. But I think that the show writing suffered because he didn't want to make it like the movie.
Reason 2.) I think this reason IS Rick's hubris, or more so the fans reaction to it. I think Rick complained about the movies changing so much, that when he changed things for his show, the fan base was upset at the hypocrisy. He promised a faithful adaptation, and then didn't give us one, and people didn't like that.
Now, that being said, I think the changes he did make were important, and I think a lot of his hatred towards the movies was warranted.
His biggest issue with the movies was that they took his child characters and made most of their plot lines about sex. Grover was always horny, no pun intended. Percy and Annabeth never had a fleshed out romance, and it seemed like they only liked each other because they were hot.
Next, the writing was awful as an adaptation, and Fox promised him they would be closer to the books. Luke had no real connection to Annabeth except for one scene in SoM. Luke was obviously the bad guy from his first scene. Luke was a slimy guy, not charismatic and suave. Percy was less sarcastic and insecure, and more whiny and bratty. Annabeth would say totally normal stuff, and people would look at her and she'd just remind them she's Athena's daughter. I think Tyson was the best written character out of both movies.
Lastly, this series is for kids. The books are for kids, and so is the show. The movie made it for teenagers, which took out a lot of the importance of what the series is supposed to mean for children. Percy Jackson is supposed to show kids that everyone has potential, and anyone can overcome obstacles that seem stacked against them. Their job is to grow and learn. The movies showed a bunch of self assured teenagers, none of whom had to actually overcome diversity or any real issues, that couldn't really lose because they were just better.
That's just my take on it. Thank you for your time.