I'm by no means an Ibanez authority, but the set-neck Ibanez Artist models, the semihollow AS Artist models, the Musician models, and the bolt-on LP variation PF- models are all way better than their straight LP copies.
When it comes to their LP copies, I think they just made them pretty and cheap. A low cost Gibson alternative. But the models I mentioned, they were Ibanez original designs and were made with premium materials and are very high quality guitars in their own right.