I was too young to grow up on the original Clash, but I watched it after seeing the remake. Maybe it's because I've been spoiled with newer movies, but I couldn't get over the cheesy claymation in the original. I can't bring myself to say that I liked the movie. The only element that I can say I like about it was their treatment of the Greek pantheon. Zeus helped Perseus along and he was greatfull for the help. It was very true to Aeschylus, Homer, and the older conveyors of Greek mythology. They viewed the gods with human emotions, but in a positive light. The gods were there to help humanity. The remake of Clash and its sequel, Wrath, are much more akin to the views of Euripides and modern American culture--anything with any sort of connection to divinity is inherently selfish and should be ignored. It's not a major theme of the movie, though it is a subtle undertone throughout both movies. It's not a make or break part of the movie, though I do wish they did that part differently.
One really intriguing aspect of Wrath that I wish they explored further was idea of a god's death. There was a candid conversation between Zeus and Hades regarding the fact that humans had a place to go when they die, but for the gods, there is only nothingness. I wish they explored that idea more. Oh well
If you're looking for a thought provoking movie, skip Wrath. If you're looking for a fun, epic action, check out Wrath.