I picked up Legends on sale for no cost due to digital deluxe credit, and it's a fantastic game! My only experience with the predecessor, Origins, is through the "Back to Origins" levels I've been unlocking, but from that experience I've liked Legends more than Origins. I'm not liking some of the Origins levels all that much.
When playing solo Murphy isn't exactly my favorite thing ever, either, because I like to get all the secrets in my first run, and I don't always have that chance. Otherwise it's a nice break of pace though. Certainly more fun with a second player.
I'm not sure how reliable it is to make the comparison between Legends and Origins this way, and I may have not seen enough to judge,