I liked it a lot more than Asimov's, for what it's worth. It's one of my favorite stories so, yes, I would say it's a masterpiece. The plot is not simplistic and the characters do not appear wooden to me.
The Expanse I liked even better (at least until the last book or two), though it probably helped that I didn't have trouble remembering the names. My western bias shows in that I had a lot of trouble telling apart the chinese names even on the second "read" (audio book) of the 3BP trilogy, especially when they then add nicknames into the mix. Da Chu and Chu Cheng are the same person¹, but besides him and a few other main characters, I had to get who's who from context. (And, pardon, but calling people Ding, Dong, and Meow takes me out of the story the first few mentions.) Whether I'd still like The Expanse more if I didn't have this problem in 3BP... hmm, probably yes because there's this 'political correctness' stuff that isn't really my thing, but it would certainly be a close call.
¹ Now that I look it up on Wikipedia, it's apparently spelled Shi Qiang and Da Shi. (Original spelling is from memory, last time I listened to the books was about a year ago)
The Expanse I liked even better (at least until the last book or two), though it probably helped that I didn't have trouble remembering the names. My western bias shows in that I had a lot of trouble telling apart the chinese names even on the second "read" (audio book) of the 3BP trilogy, especially when they then add nicknames into the mix. Da Chu and Chu Cheng are the same person¹, but besides him and a few other main characters, I had to get who's who from context. (And, pardon, but calling people Ding, Dong, and Meow takes me out of the story the first few mentions.) Whether I'd still like The Expanse more if I didn't have this problem in 3BP... hmm, probably yes because there's this 'political correctness' stuff that isn't really my thing, but it would certainly be a close call.
¹ Now that I look it up on Wikipedia, it's apparently spelled Shi Qiang and Da Shi. (Original spelling is from memory, last time I listened to the books was about a year ago)